diff --git a/API_WEBSOCKET.md b/API_WEBSOCKET.md
new file mode 100644
index 0000000..c7613e9
--- /dev/null
+++ b/API_WEBSOCKET.md
@@ -0,0 +1,348 @@
+# WebSocket API
+
+`go run . -port /dev/ttyUSB0 serve` exposes two WebSocket endpoints. They share the same UART link but serve different purposes.
+
+| URL | Port (default) | Role |
+|-----|----------------|------|
+| `ws://localhost:8080/ws` | Dashboard (`-addr`) | Server → client only: full `DashboardState` JSON (~2 s poll + live-stream accel/tap) |
+| `ws://localhost:8081/ws` | External API (`-api-addr`) | Request/response commands + optional **accel** / **tap** push streams |
+
+Disable the external server with `-api-addr ""`.
+
+CLI overview and UART commands: [`../README.md`](../README.md). HTTP endpoints: [`API_REST.md`](API_REST.md).
+
+---
+
+## External API (`:8081/ws`)
+
+### Connection flow
+
+1. Connect → server sends **`hello`** (receive off; lists available commands).
+2. Send JSON commands → server replies with a matching `*_status` or `client_list` message (one reply per command).
+3. After `set_stream` / `set_tap_stream` with `enable: true`, the server may send **`accel`** and/or **`tap`** messages **without** a prior command (push stream).
+
+Commands and stream pushes are multiplexed on one socket. While streaming, always parse `type` and branch (status vs sample vs error).
+
+### Two layers (accel and tap)
+
+| Layer | Commands | Effect |
+|-------|----------|--------|
+| **Firmware (ESP-NOW)** | `set_accel_stream`, `set_tap_notify` | Per `client_id`: slave sends accel or tap kinds to the master |
+| **This connection (host)** | `set_stream`, `set_tap_stream` | Whether **you** receive push JSON and at what rate (`interval_ms`, 1 ms … 10 s) |
+
+- **Accel UART polling** runs only if at least one connection has `receive_accel: true` **and** at least one slave streams accel (`set_accel_stream` or dashboard).
+- **Tap UART polling** runs only if at least one connection has `receive_tap: true` (`set_tap_stream`). `set_tap_notify` alone does **not** poll.
+
+Typical sequence:
+
+1. `list_clients` → slave IDs
+2. Per slave: `set_accel_stream` / `set_tap_notify` as needed
+3. `set_stream` and/or `set_tap_stream` with `"enable": true`
+4. Read push messages in a loop
+
+There is **no per-slave filter** on push messages: each `accel` contains all cached slaves; each `tap` contains all visible events. Filter by `client_id` in your app.
+
+---
+
+## Push stream messages
+
+These are the samples you get after enabling receive. Interval is per WebSocket connection; the server UART poll uses the **minimum** `interval_ms` among all subscribers that want accel or tap.
+
+### `accel` (type `"accel"`)
+
+Sent only when `set_stream` has `enable: true`, a slave streams accel, and the poll tick fires for this connection.
+
+**Success** — all slaves with a cache entry on the master (not only those with `valid: true`):
+
+```json
+{
+  "type": "accel",
+  "t": 1716900123456789012,
+  "success": true,
+  "clients": [
+    {
+      "client_id": 16,
+      "valid": true,
+      "x": 12,
+      "y": -34,
+      "z": 16384,
+      "age_ms": 8
+    },
+    {
+      "client_id": 42,
+      "valid": false
+    }
+  ]
+}
+```
+
+| Field | Meaning |
+|-------|---------|
+| `t` | Unix timestamp in **nanoseconds** when the host read the cache |
+| `success` | `true` if `CACHE_STATUS` succeeded |
+| `clients[]` | One entry per slave slot in the master cache |
+| `client_id` | ESP-NOW client id (same as `list_clients`) |
+| `valid` | `false` if no sample yet or stale; omit `x`/`y`/`z` when false |
+| `x`, `y`, `z` | Raw accelerometer LSB (BMA456, ±2 g scale on the pod) |
+| `age_ms` | Milliseconds since the master received this sample |
+
+**Failure** (e.g. UART busy):
+
+```json
+{
+  "type": "accel",
+  "t": 1716900123456789012,
+  "success": false,
+  "error": "uart busy"
+}
+```
+
+No `clients` array on failure.
+
+### `tap` (type `"tap"`)
+
+Sent only when `set_tap_stream` has `enable: true` and there is at least one event to show.
+
+Events appear when the master cache reports a new tap. Each event stays in push payloads for **`tap_display_min_ms`** (2000 ms, also in `hello`) after the API first saw it, even if the hardware age grows.
+
+**Success**:
+
+```json
+{
+  "type": "tap",
+  "t": 1716900123456789012,
+  "success": true,
+  "events": [
+    {
+      "client_id": 16,
+      "valid": true,
+      "kind": "single",
+      "age_ms": 3,
+      "shown_at_ms": 1717000000123
+    }
+  ]
+}
+```
+
+| Field | Meaning |
+|-------|---------|
+| `t` | Unix timestamp in **nanoseconds** (poll time) |
+| `events[]` | All taps currently “on screen” for the API |
+| `client_id` | Slave that tapped |
+| `kind` | `"single"`, `"double"`, or `"triple"` |
+| `age_ms` | Age in the master cache when read |
+| `shown_at_ms` | Unix **milliseconds** when this host first included the event |
+
+If no events are visible, **no** `tap` message is sent on that tick (unlike accel, which can send empty `clients` only on success with cache data).
+
+**Failure**:
+
+```json
+{
+  "type": "tap",
+  "t": 1716900123456789012,
+  "success": false,
+  "error": "uart busy"
+}
+```
+
+---
+
+## Commands (request → response)
+
+Send one JSON object per message. Field `type` selects the command.
+
+### `hello` (server → client, on connect)
+
+```json
+{
+  "type": "hello",
+  "serial_port": "/dev/ttyUSB0",
+  "interval_ms": 16,
+  "tap_display_min_ms": 2000,
+  "note": "set_tap_notify configures slave S/D/T only; set_tap_stream enables tap polling/push",
+  "commands": [
+    "list_clients",
+    "set_stream", "get_stream",
+    "set_accel_stream", "get_accel_stream",
+    "set_tap_stream", "get_tap_stream",
+    "set_tap_notify", "get_tap_notify",
+    "set_led_ring", "get_battery"
+  ]
+}
+```
+
+### `list_clients`
+
+Request: `{"type":"list_clients"}`
+
+Response `client_list`:
+
+```json
+{
+  "type": "client_list",
+  "success": true,
+  "clients": [
+    {
+      "id": 16,
+      "mac": "aa:bb:cc:dd:ee:10",
+      "version": 1,
+      "available": true,
+      "used": true,
+      "last_ping": 1234,
+      "last_success_ping": 1200,
+      "accel_stream": false,
+      "tap_notify_single": false,
+      "tap_notify_double": false,
+      "tap_notify_triple": false
+    }
+  ]
+}
+```
+
+### `set_stream` / `get_stream` (receive accel on this connection)
+
+```json
+{"type":"set_stream","enable":true,"interval_ms":32}
+{"type":"get_stream"}
+```
+
+Response `stream_status`:
+
+```json
+{"type":"stream_status","receive_accel":true,"interval_ms":32,"success":true}
+```
+
+### `set_accel_stream` / `get_accel_stream` (firmware, per slave)
+
+`client_id` required (> 0).
+
+```json
+{"type":"set_accel_stream","client_id":16,"enable":true}
+{"type":"get_accel_stream","client_id":16}
+```
+
+Response `accel_stream_status`:
+
+```json
+{"type":"accel_stream_status","client_id":16,"enabled":true,"success":true}
+```
+
+### `set_tap_stream` / `get_tap_stream` (receive tap on this connection)
+
+```json
+{"type":"set_tap_stream","enable":true,"interval_ms":16}
+{"type":"get_tap_stream"}
+```
+
+Response `tap_stream_status`:
+
+```json
+{"type":"tap_stream_status","receive_tap":true,"interval_ms":16,"success":true}
+```
+
+### `set_tap_notify` / `get_tap_notify` (firmware, per slave)
+
+Per client: `single`, `double_tap`, `triple` required on set.
+
+```json
+{"type":"set_tap_notify","client_id":16,"single":true,"double_tap":false,"triple":false}
+```
+
+Broadcast: `"all_clients": true` with the three booleans.
+
+Response `tap_notify_status`:
+
+```json
+{
+  "type": "tap_notify_status",
+  "client_id": 16,
+  "success": true,
+  "single": true,
+  "double_tap": false,
+  "triple": false
+}
+```
+
+### `set_led_ring`
+
+Same JSON body as [`POST /api/led-ring`](API_REST.md#led-ring) with `"type":"set_led_ring"` added. Reply: `led_ring_status`.
+
+### `get_battery`
+
+Body: `{"type":"get_battery","all_clients":true}` or `"client_id":16`. Default if omitted: all clients.
+
+Reply: `battery_status` with `samples[]` (see REST doc).
+
+---
+
+## Examples
+
+### Accel stream
+
+```python
+import asyncio, json, websockets
+
+async def main():
+    async with websockets.connect("ws://127.0.0.1:8081/ws") as ws:
+        print(await ws.recv())  # hello
+        await ws.send(json.dumps({"type": "list_clients"}))
+        clients = json.loads(await ws.recv())["clients"]
+        for c in clients:
+            if not c.get("available"):
+                continue
+            await ws.send(json.dumps({
+                "type": "set_accel_stream", "client_id": c["id"], "enable": True
+            }))
+            await ws.recv()  # accel_stream_status
+        await ws.send(json.dumps({"type": "set_stream", "enable": True, "interval_ms": 16}))
+        await ws.recv()  # stream_status
+        while True:
+            msg = json.loads(await ws.recv())
+            if msg.get("type") != "accel":
+                continue
+            if not msg.get("success"):
+                print("error:", msg.get("error"))
+                continue
+            for c in msg.get("clients", []):
+                if c.get("valid"):
+                    print(c["client_id"], c["x"], c["y"], c["z"], "age", c.get("age_ms"))
+
+asyncio.run(main())
+```
+
+### Tap stream
+
+```python
+import asyncio, json, websockets
+
+async def main():
+    async with websockets.connect("ws://127.0.0.1:8081/ws") as ws:
+        print(await ws.recv())  # hello
+        await ws.send(json.dumps({
+            "type": "set_tap_notify", "client_id": 16,
+            "single": True, "double_tap": False, "triple": False
+        }))
+        await ws.recv()  # tap_notify_status
+        await ws.send(json.dumps({"type": "set_tap_stream", "enable": True, "interval_ms": 16}))
+        await ws.recv()  # tap_stream_status
+        while True:
+            msg = json.loads(await ws.recv())
+            if msg.get("type") == "tap" and msg.get("events"):
+                for e in msg["events"]:
+                    print(e["client_id"], e["kind"], "age", e.get("age_ms"))
+
+asyncio.run(main())
+```
+
+---
+
+## Dashboard WebSocket (`:8080/ws`)
+
+Read-only from the browser’s perspective: the server pushes JSON whenever state changes. Clients do not send commands on this socket (messages are ignored).
+
+Payload shape: `DashboardState` — `updated_at`, `serial_port`, `uart_connected`, `live_stream`, `master`, `clients[]` (id, mac, accel, tap notify flags, battery, etc.). Accel/tap samples appear here when **Live stream** is enabled in the UI (`PUT /api/live-stream`).
+
+During OTA, additional messages with `"type":"ota_progress"` may appear on the same socket.
+
+Configure slaves via REST on `:8080` ([`API_REST.md`](API_REST.md)), not via this WebSocket.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..933dc9e
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+get_api_desc:
+	cp ../dev/esp/powerpod/goTool/docs/API_WEBSOCKET.md ./API_WEBSOCKET.md
\ No newline at end of file
diff --git a/project.godot b/project.godot
index c0108d6..66ae2ed 100644
--- a/project.godot
+++ b/project.godot
@@ -11,12 +11,14 @@ config_version=5
 [application]
 
 config/name="alox_test_game"
-run/main_scene="res://scenes/main.tscn"
+run/main_scene="res://scenes/menu.tscn"
 config/features=PackedStringArray("4.6", "GL Compatibility")
 config/icon="res://icon.svg"
 
 [display]
 
+window/size/viewport_width=1920
+window/size/viewport_height=1080
 window/stretch/mode="canvas_items"
 
 [physics]
diff --git a/scenes/color_game.tscn b/scenes/color_game.tscn
new file mode 100644
index 0000000..655f433
--- /dev/null
+++ b/scenes/color_game.tscn
@@ -0,0 +1,88 @@
+[gd_scene format=3 uid="uid://bcolorgame001"]
+
+[ext_resource type="Script" path="res://scripts/color_game.gd" id="1_color"]
+
+[node name="ColorGame" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_color")
+
+[node name="ColorRect" type="ColorRect" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 2
+color = Color(0.5, 0.3, 0.7, 1)
+
+[node name="UiLayer" type="CanvasLayer" parent="."]
+
+[node name="BackButton" type="Button" parent="UiLayer"]
+offset_left = 16.0
+offset_top = 12.0
+offset_right = 120.0
+offset_bottom = 44.0
+text = "Menü"
+
+[node name="Title" type="Label" parent="UiLayer"]
+anchors_preset = 5
+anchor_left = 0.5
+anchor_right = 0.5
+offset_left = -200.0
+offset_top = 60.0
+offset_right = 200.0
+offset_bottom = 100.0
+grow_horizontal = 2
+theme_override_colors/font_color = Color(1, 1, 1, 1)
+theme_override_font_sizes/font_size = 28
+horizontal_alignment = 1
+text = "Color Game"
+
+[node name="TargetRect" type="ColorRect" parent="UiLayer"]
+anchors_preset = 5
+anchor_left = 0.5
+anchor_right = 0.5
+offset_left = -60.0
+offset_top = 120.0
+offset_right = 60.0
+offset_bottom = 240.0
+grow_horizontal = 2
+color = Color(0.85, 0.2, 0.3, 1)
+
+[node name="TargetLabel" type="Label" parent="UiLayer"]
+anchors_preset = 5
+anchor_left = 0.5
+anchor_right = 0.5
+offset_left = -100.0
+offset_top = 250.0
+offset_right = 100.0
+offset_bottom = 280.0
+grow_horizontal = 2
+theme_override_colors/font_color = Color(1, 1, 1, 0.9)
+theme_override_font_sizes/font_size = 14
+horizontal_alignment = 1
+text = "Zielfarbe"
+
+[node name="HintLabel" type="Label" parent="UiLayer"]
+anchors_preset = 7
+anchor_left = 0.5
+anchor_top = 1.0
+anchor_right = 0.5
+anchor_bottom = 1.0
+offset_left = -320.0
+offset_top = -80.0
+offset_right = 320.0
+offset_bottom = -40.0
+grow_horizontal = 2
+grow_vertical = 0
+theme_override_colors/font_color = Color(1, 1, 1, 0.85)
+theme_override_font_sizes/font_size = 14
+horizontal_alignment = 1
+autowrap_mode = 3
+text = "Neige das Gerät, um die Farbe anzupassen"
diff --git a/scenes/config.tscn b/scenes/config.tscn
new file mode 100644
index 0000000..105a519
--- /dev/null
+++ b/scenes/config.tscn
@@ -0,0 +1,82 @@
+[gd_scene format=3 uid="uid://rbiqgb2rqnpc"]
+
+[ext_resource type="Script" path="res://scripts/config.gd" id="1_config"]
+
+[node name="Config" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_config")
+
+[node name="Background" type="ColorRect" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 2
+color = Color(0.08, 0.09, 0.14, 1)
+
+[node name="UiLayer" type="CanvasLayer" parent="."]
+
+[node name="BackButton" type="Button" parent="UiLayer"]
+offset_left = 16.0
+offset_top = 12.0
+offset_right = 120.0
+offset_bottom = 44.0
+text = "Menü"
+
+[node name="Title" type="Label" parent="UiLayer"]
+anchors_preset = 5
+anchor_left = 0.5
+anchor_right = 0.5
+offset_left = -200.0
+offset_top = 80.0
+offset_right = 200.0
+offset_bottom = 120.0
+grow_horizontal = 2
+theme_override_colors/font_color = Color(0.9, 0.92, 0.98, 1)
+theme_override_font_sizes/font_size = 28
+horizontal_alignment = 1
+text = "Config"
+
+[node name="Panel" type="VBoxContainer" parent="UiLayer"]
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -280.0
+offset_top = -80.0
+offset_right = 280.0
+offset_bottom = 80.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_constants/separation = 20
+alignment = 1
+
+[node name="WSUrlLabel" type="Label" parent="UiLayer/Panel"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.75, 0.8, 0.9, 1)
+theme_override_font_sizes/font_size = 16
+horizontal_alignment = 1
+text = "WebSocket: ws://localhost:9090/ws"
+
+[node name="ViewportLabel" type="Label" parent="UiLayer/Panel"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.75, 0.8, 0.9, 1)
+theme_override_font_sizes/font_size = 16
+horizontal_alignment = 1
+text = "Viewport: 1152 × 648"
+
+[node name="HintLabel" type="Label" parent="UiLayer/Panel"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.6, 0.65, 0.75, 1)
+theme_override_font_sizes/font_size = 14
+horizontal_alignment = 1
+autowrap_mode = 3
+text = "Projekteinstellungen (weitere Optionen folgen)"
diff --git a/scenes/demo.tscn b/scenes/demo.tscn
new file mode 100644
index 0000000..12d3a04
--- /dev/null
+++ b/scenes/demo.tscn
@@ -0,0 +1,166 @@
+[gd_scene format=3 uid="uid://clxuqui2bti65"]
+
+[ext_resource type="Script" path="res://scripts/demo.gd" id="1_demo"]
+
+[node name="Demo" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_demo")
+
+[node name="Background" type="ColorRect" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 2
+color = Color(0.08, 0.09, 0.14, 1)
+
+[node name="UiLayer" type="CanvasLayer" parent="."]
+
+[node name="TopBar" type="HBoxContainer" parent="UiLayer"]
+anchors_preset = 10
+anchor_right = 1.0
+offset_left = 16.0
+offset_top = 12.0
+offset_right = -16.0
+offset_bottom = 52.0
+grow_horizontal = 2
+theme_override_constants/separation = 16
+
+[node name="BackButton" type="Button" parent="UiLayer/TopBar"]
+custom_minimum_size = Vector2(100, 0)
+layout_mode = 2
+text = "Menü"
+
+[node name="Title" type="Label" parent="UiLayer/TopBar"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.9, 0.92, 0.98, 1)
+theme_override_font_sizes/font_size = 22
+text = "API Demo"
+
+[node name="UrlLabel" type="Label" parent="UiLayer/TopBar"]
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_colors/font_color = Color(0.55, 0.6, 0.7, 1)
+theme_override_font_sizes/font_size = 13
+text = "ws://localhost:8081/ws"
+
+[node name="StatusLabel" type="Label" parent="UiLayer/TopBar"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.75, 0.8, 0.9, 1)
+theme_override_font_sizes/font_size = 13
+text = "Verbinde…"
+
+[node name="MainSplit" type="HSplitContainer" parent="UiLayer"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = 16.0
+offset_top = 60.0
+offset_right = -16.0
+offset_bottom = -12.0
+grow_horizontal = 2
+grow_vertical = 2
+split_offset = 520
+
+[node name="LeftPanel" type="VBoxContainer" parent="UiLayer/MainSplit"]
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+theme_override_constants/separation = 12
+
+[node name="Toolbar" type="HBoxContainer" parent="UiLayer/MainSplit/LeftPanel"]
+layout_mode = 2
+theme_override_constants/separation = 12
+
+[node name="ListClientsBtn" type="Button" parent="UiLayer/MainSplit/LeftPanel/Toolbar"]
+custom_minimum_size = Vector2(140, 40)
+layout_mode = 2
+text = "Clients laden"
+
+[node name="IntervalLabel" type="Label" parent="UiLayer/MainSplit/LeftPanel/Toolbar"]
+layout_mode = 2
+text = "interval_ms:"
+
+[node name="IntervalSpin" type="SpinBox" parent="UiLayer/MainSplit/LeftPanel/Toolbar"]
+custom_minimum_size = Vector2(90, 0)
+layout_mode = 2
+min_value = 1.0
+max_value = 10000.0
+value = 16.0
+
+[node name="ClientsScroll" type="ScrollContainer" parent="UiLayer/MainSplit/LeftPanel"]
+layout_mode = 2
+size_flags_vertical = 3
+horizontal_scroll_mode = 0
+
+[node name="ClientsList" type="VBoxContainer" parent="UiLayer/MainSplit/LeftPanel/ClientsScroll"]
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_constants/separation = 8
+
+[node name="EmptyHint" type="Label" parent="UiLayer/MainSplit/LeftPanel/ClientsScroll/ClientsList"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.55, 0.6, 0.7, 1)
+theme_override_font_sizes/font_size = 13
+autowrap_mode = 3
+text = "„Clients laden“ drücken, pro Client Accel/Tap konfigurieren, dann Stream starten."
+
+[node name="StreamBar" type="HBoxContainer" parent="UiLayer/MainSplit/LeftPanel"]
+layout_mode = 2
+theme_override_constants/separation = 12
+
+[node name="StartStreamBtn" type="Button" parent="UiLayer/MainSplit/LeftPanel/StreamBar"]
+custom_minimum_size = Vector2(0, 48)
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_font_sizes/font_size = 16
+disabled = true
+text = "Stream starten"
+
+[node name="StopStreamBtn" type="Button" parent="UiLayer/MainSplit/LeftPanel/StreamBar"]
+custom_minimum_size = Vector2(0, 48)
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_font_sizes/font_size = 16
+disabled = true
+text = "Stream stoppen"
+
+[node name="LogPanel" type="VBoxContainer" parent="UiLayer/MainSplit"]
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+theme_override_constants/separation = 8
+
+[node name="LogHeader" type="Label" parent="UiLayer/MainSplit/LogPanel"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.9, 0.92, 0.55, 1)
+theme_override_font_sizes/font_size = 14
+text = "Log"
+
+[node name="LogOutput" type="TextEdit" parent="UiLayer/MainSplit/LogPanel"]
+layout_mode = 2
+size_flags_vertical = 3
+theme_override_font_sizes/font_size = 12
+editable = false
+wrap_mode = 1
+
+[node name="StreamHeader" type="Label" parent="UiLayer/MainSplit/LogPanel"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.9, 0.92, 0.55, 1)
+theme_override_font_sizes/font_size = 14
+text = "Live-Daten (alle Clients)"
+
+[node name="StreamOutput" type="Label" parent="UiLayer/MainSplit/LogPanel"]
+custom_minimum_size = Vector2(0, 160)
+layout_mode = 2
+theme_override_colors/font_color = Color(0.75, 0.85, 0.95, 1)
+theme_override_font_sizes/font_size = 13
+autowrap_mode = 3
+text = "—"
diff --git a/scenes/main.tscn b/scenes/main.tscn
index 0e4b9bf..c56d35f 100644
--- a/scenes/main.tscn
+++ b/scenes/main.tscn
@@ -1,16 +1,16 @@
-[gd_scene load_steps=4 format=3 uid="uid://bmain2dscene01"]
+[gd_scene format=3 uid="uid://cjs5bms5o6763"]
 
 [ext_resource type="Script" path="res://scripts/main.gd" id="1_main"]
-[ext_resource type="Script" path="res://scripts/ball.gd" id="2_ball"]
-[ext_resource type="Script" path="res://scripts/calibration_overlay.gd" id="3_calib"]
+[ext_resource type="Script" uid="uid://bnvlevjo1fp48" path="res://scripts/ball.gd" id="2_ball"]
+[ext_resource type="Script" uid="uid://crbm1833myr5l" path="res://scripts/calibration_overlay.gd" id="3_calib"]
 
-[node name="Main" type="Node2D"]
+[node name="Main" type="Node2D" unique_id=474005048]
 script = ExtResource("1_main")
 
-[node name="BgLayer" type="CanvasLayer" parent="."]
+[node name="BgLayer" type="CanvasLayer" parent="." unique_id=895115848]
 layer = -10
 
-[node name="Background" type="ColorRect" parent="BgLayer"]
+[node name="Background" type="ColorRect" parent="BgLayer" unique_id=808294717]
 anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
@@ -19,18 +19,18 @@ grow_vertical = 2
 mouse_filter = 2
 color = Color(0.08, 0.09, 0.14, 1)
 
-[node name="Platform" type="Polygon2D" parent="."]
+[node name="Platform" type="Polygon2D" parent="." unique_id=1966405851]
+position = Vector2(576, 600)
 color = Color(0.25, 0.72, 0.95, 1)
 polygon = PackedVector2Array(-80, -12, 80, -12, 80, 12, -80, -12)
-position = Vector2(576, 600)
 
-[node name="Ball" type="Node2D" parent="."]
+[node name="Ball" type="Node2D" parent="." unique_id=1211114968]
 position = Vector2(576, 320)
 script = ExtResource("2_ball")
 
-[node name="UiLayer" type="CanvasLayer" parent="."]
+[node name="UiLayer" type="CanvasLayer" parent="." unique_id=635198279]
 
-[node name="StatusLabel" type="Label" parent="UiLayer"]
+[node name="StatusLabel" type="Label" parent="UiLayer" unique_id=601884942]
 offset_left = 16.0
 offset_top = 12.0
 offset_right = 560.0
@@ -39,47 +39,44 @@ theme_override_colors/font_color = Color(0.75, 0.8, 0.9, 1)
 theme_override_font_sizes/font_size = 14
 text = "Starting…"
 
-[node name="ThresholdPanel" type="VBoxContainer" parent="UiLayer"]
+[node name="ThresholdPanel" type="VBoxContainer" parent="UiLayer" unique_id=1490838898]
 offset_left = 16.0
 offset_top = 48.0
 offset_right = 420.0
 offset_bottom = 148.0
 
-[node name="ThresholdCaption" type="Label" parent="UiLayer/ThresholdPanel"]
+[node name="ThresholdCaption" type="Label" parent="UiLayer/ThresholdPanel" unique_id=1245613915]
 layout_mode = 2
 theme_override_colors/font_color = Color(0.75, 0.8, 0.9, 1)
 theme_override_font_sizes/font_size = 14
 text = "Schwellwert: 3000"
 
-[node name="ThresholdSlider" type="HSlider" parent="UiLayer/ThresholdPanel"]
+[node name="ThresholdSlider" type="HSlider" parent="UiLayer/ThresholdPanel" unique_id=1874311831]
 custom_minimum_size = Vector2(380, 0)
 layout_mode = 2
 size_flags_horizontal = 3
-min_value = 0.0
 max_value = 15000.0
 step = 50.0
 value = 3000.0
 tick_count = 16
 ticks_on_borders = true
 
-[node name="SensitivityCaption" type="Label" parent="UiLayer/ThresholdPanel"]
+[node name="SensitivityCaption" type="Label" parent="UiLayer/ThresholdPanel" unique_id=1083787312]
 layout_mode = 2
 theme_override_colors/font_color = Color(0.75, 0.8, 0.9, 1)
 theme_override_font_sizes/font_size = 14
 text = "Bewegungsstärke: 6 %"
 
-[node name="SensitivitySlider" type="HSlider" parent="UiLayer/ThresholdPanel"]
+[node name="SensitivitySlider" type="HSlider" parent="UiLayer/ThresholdPanel" unique_id=1497316063]
 custom_minimum_size = Vector2(380, 0)
 layout_mode = 2
 size_flags_horizontal = 3
 min_value = 1.0
-max_value = 100.0
-step = 1.0
 value = 6.0
 tick_count = 11
 ticks_on_borders = true
 
-[node name="AccelLabel" type="Label" parent="UiLayer"]
+[node name="AccelLabel" type="Label" parent="UiLayer" unique_id=1538579724]
 anchors_preset = 3
 anchor_left = 1.0
 anchor_top = 1.0
@@ -93,10 +90,10 @@ grow_horizontal = 0
 grow_vertical = 0
 theme_override_colors/font_color = Color(0.9, 0.92, 0.55, 1)
 theme_override_font_sizes/font_size = 16
-horizontal_alignment = 2
 text = "x: —   y: —   z: —"
+horizontal_alignment = 2
 
-[node name="RecalibButton" type="Button" parent="UiLayer"]
+[node name="RecalibButton" type="Button" parent="UiLayer" unique_id=1145373245]
 visible = false
 anchors_preset = 1
 anchor_left = 1.0
@@ -108,17 +105,16 @@ offset_bottom = 44.0
 grow_horizontal = 0
 text = "Kalibrierung neu starten"
 
-[node name="CalibrationOverlay" type="Control" parent="UiLayer"]
+[node name="CalibrationOverlay" type="Control" parent="UiLayer" unique_id=2105464363]
 layout_mode = 3
 anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
-mouse_filter = 0
 script = ExtResource("3_calib")
 
-[node name="HintLabel" type="Label" parent="UiLayer/CalibrationOverlay"]
+[node name="HintLabel" type="Label" parent="UiLayer/CalibrationOverlay" unique_id=2126154488]
 layout_mode = 1
 anchors_preset = 5
 anchor_left = 0.5
@@ -130,11 +126,11 @@ offset_bottom = 140.0
 grow_horizontal = 2
 theme_override_colors/font_color = Color(0.9, 0.92, 0.98, 1)
 theme_override_font_sizes/font_size = 20
+text = "Kalibrierung"
 horizontal_alignment = 1
 autowrap_mode = 3
-text = "Kalibrierung"
 
-[node name="StartButton" type="Button" parent="UiLayer/CalibrationOverlay"]
+[node name="StartButton" type="Button" parent="UiLayer/CalibrationOverlay" unique_id=468536630]
 layout_mode = 1
 anchors_preset = 7
 anchor_left = 0.5
@@ -146,4 +142,5 @@ offset_top = -120.0
 offset_right = 140.0
 offset_bottom = -72.0
 grow_horizontal = 2
+grow_vertical = 0
 text = "Kalibrierung starten"
diff --git a/scenes/menu.tscn b/scenes/menu.tscn
new file mode 100644
index 0000000..2d03d82
--- /dev/null
+++ b/scenes/menu.tscn
@@ -0,0 +1,91 @@
+[gd_scene format=3 uid="uid://cmainmenu001"]
+
+[ext_resource type="Script" path="res://scripts/menu.gd" id="1_menu"]
+
+[node name="Menu" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_menu")
+
+[node name="Background" type="ColorRect" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 2
+color = Color(0.08, 0.09, 0.14, 1)
+
+[node name="CenterBox" type="VBoxContainer" parent="."]
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -180.0
+offset_top = -240.0
+offset_right = 180.0
+offset_bottom = 240.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_constants/separation = 16
+alignment = 1
+
+[node name="Title" type="Label" parent="CenterBox"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.9, 0.92, 0.98, 1)
+theme_override_font_sizes/font_size = 32
+horizontal_alignment = 1
+text = "alox test game"
+
+[node name="Subtitle" type="Label" parent="CenterBox"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.6, 0.65, 0.75, 1)
+theme_override_font_sizes/font_size = 14
+horizontal_alignment = 1
+text = "Hauptmenü"
+
+[node name="Spacer" type="Control" parent="CenterBox"]
+custom_minimum_size = Vector2(0, 24)
+layout_mode = 2
+
+[node name="DemoButton" type="Button" parent="CenterBox"]
+custom_minimum_size = Vector2(280, 48)
+layout_mode = 2
+size_flags_horizontal = 4
+theme_override_font_sizes/font_size = 18
+text = "Demo"
+
+[node name="ConfigButton" type="Button" parent="CenterBox"]
+custom_minimum_size = Vector2(280, 48)
+layout_mode = 2
+size_flags_horizontal = 4
+theme_override_font_sizes/font_size = 18
+text = "Config"
+
+[node name="PongButton" type="Button" parent="CenterBox"]
+custom_minimum_size = Vector2(280, 48)
+layout_mode = 2
+size_flags_horizontal = 4
+theme_override_font_sizes/font_size = 18
+text = "Pong"
+
+[node name="ColorGameButton" type="Button" parent="CenterBox"]
+custom_minimum_size = Vector2(280, 48)
+layout_mode = 2
+size_flags_horizontal = 4
+theme_override_font_sizes/font_size = 18
+text = "Color Game"
+
+[node name="ExitButton" type="Button" parent="CenterBox"]
+custom_minimum_size = Vector2(280, 48)
+layout_mode = 2
+size_flags_horizontal = 4
+theme_override_font_sizes/font_size = 18
+text = "Exit"
diff --git a/scenes/pong.tscn b/scenes/pong.tscn
new file mode 100644
index 0000000..15105e4
--- /dev/null
+++ b/scenes/pong.tscn
@@ -0,0 +1,156 @@
+[gd_scene format=3 uid="uid://dbq0yorbl7vwu"]
+
+[ext_resource type="Script" path="res://scripts/pong.gd" id="1_pong"]
+[ext_resource type="Script" path="res://scripts/ball.gd" id="2_ball"]
+[ext_resource type="Script" path="res://scripts/calibration_overlay.gd" id="3_calib"]
+
+[node name="Pong" type="Node2D"]
+script = ExtResource("1_pong")
+
+[node name="BgLayer" type="CanvasLayer" parent="."]
+layer = -10
+
+[node name="Background" type="ColorRect" parent="BgLayer"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 2
+color = Color(0.08, 0.09, 0.14, 1)
+
+[node name="Platform" type="Polygon2D" parent="."]
+color = Color(0.25, 0.72, 0.95, 1)
+polygon = PackedVector2Array(-80, -12, 80, -12, 80, 12, -80, -12)
+position = Vector2(576, 600)
+
+[node name="Ball" type="Node2D" parent="."]
+position = Vector2(576, 320)
+script = ExtResource("2_ball")
+
+[node name="UiLayer" type="CanvasLayer" parent="."]
+
+[node name="MenuButton" type="Button" parent="UiLayer"]
+offset_left = 16.0
+offset_top = 12.0
+offset_right = 120.0
+offset_bottom = 44.0
+text = "Menü"
+
+[node name="StatusLabel" type="Label" parent="UiLayer"]
+offset_left = 130.0
+offset_top = 12.0
+offset_right = 560.0
+offset_bottom = 40.0
+theme_override_colors/font_color = Color(0.75, 0.8, 0.9, 1)
+theme_override_font_sizes/font_size = 14
+text = "Starting…"
+
+[node name="ThresholdPanel" type="VBoxContainer" parent="UiLayer"]
+offset_left = 16.0
+offset_top = 48.0
+offset_right = 420.0
+offset_bottom = 148.0
+
+[node name="ThresholdCaption" type="Label" parent="UiLayer/ThresholdPanel"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.75, 0.8, 0.9, 1)
+theme_override_font_sizes/font_size = 14
+text = "Schwellwert: 3000"
+
+[node name="ThresholdSlider" type="HSlider" parent="UiLayer/ThresholdPanel"]
+custom_minimum_size = Vector2(380, 0)
+layout_mode = 2
+size_flags_horizontal = 3
+min_value = 0.0
+max_value = 15000.0
+step = 50.0
+value = 3000.0
+tick_count = 16
+ticks_on_borders = true
+
+[node name="SensitivityCaption" type="Label" parent="UiLayer/ThresholdPanel"]
+layout_mode = 2
+theme_override_colors/font_color = Color(0.75, 0.8, 0.9, 1)
+theme_override_font_sizes/font_size = 14
+text = "Bewegungsstärke: 6 %"
+
+[node name="SensitivitySlider" type="HSlider" parent="UiLayer/ThresholdPanel"]
+custom_minimum_size = Vector2(380, 0)
+layout_mode = 2
+size_flags_horizontal = 3
+min_value = 1.0
+max_value = 100.0
+step = 1.0
+value = 6.0
+tick_count = 11
+ticks_on_borders = true
+
+[node name="AccelLabel" type="Label" parent="UiLayer"]
+anchors_preset = 3
+anchor_left = 1.0
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = -320.0
+offset_top = -72.0
+offset_right = -16.0
+offset_bottom = -20.0
+grow_horizontal = 0
+grow_vertical = 0
+theme_override_colors/font_color = Color(0.9, 0.92, 0.55, 1)
+theme_override_font_sizes/font_size = 16
+horizontal_alignment = 2
+text = "x: —   y: —   z: —"
+
+[node name="RecalibButton" type="Button" parent="UiLayer"]
+visible = false
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -220.0
+offset_top = 12.0
+offset_right = -16.0
+offset_bottom = 44.0
+grow_horizontal = 0
+text = "Kalibrierung neu starten"
+
+[node name="CalibrationOverlay" type="Control" parent="UiLayer"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 0
+script = ExtResource("3_calib")
+
+[node name="HintLabel" type="Label" parent="UiLayer/CalibrationOverlay"]
+layout_mode = 1
+anchors_preset = 5
+anchor_left = 0.5
+anchor_right = 0.5
+offset_left = -360.0
+offset_top = 80.0
+offset_right = 360.0
+offset_bottom = 140.0
+grow_horizontal = 2
+theme_override_colors/font_color = Color(0.9, 0.92, 0.98, 1)
+theme_override_font_sizes/font_size = 20
+horizontal_alignment = 1
+autowrap_mode = 3
+text = "Kalibrierung"
+
+[node name="StartButton" type="Button" parent="UiLayer/CalibrationOverlay"]
+layout_mode = 1
+anchors_preset = 7
+anchor_left = 0.5
+anchor_top = 1.0
+anchor_right = 0.5
+anchor_bottom = 1.0
+offset_left = -140.0
+offset_top = -120.0
+offset_right = 140.0
+offset_bottom = -72.0
+grow_horizontal = 2
+text = "Kalibrierung starten"
diff --git a/scripts/color_game.gd b/scripts/color_game.gd
new file mode 100644
index 0000000..83581f8
--- /dev/null
+++ b/scripts/color_game.gd
@@ -0,0 +1,66 @@
+extends Control
+
+const WS_URL := "ws://localhost:9090/ws"
+const MENU_SCENE := "res://scenes/menu.tscn"
+
+@onready var color_rect: ColorRect = $ColorRect
+@onready var target_rect: ColorRect = $UiLayer/TargetRect
+@onready var hint_label: Label = $UiLayer/HintLabel
+@onready var back_button: Button = $UiLayer/BackButton
+
+var _socket := WebSocketPeer.new()
+var _accel := Vector3i.ZERO
+var _target_hue := 0.0
+
+
+func _ready() -> void:
+	back_button.pressed.connect(_return_to_menu)
+	_new_target_color()
+	var err := _socket.connect_to_url(WS_URL)
+	if err != OK:
+		hint_label.text = "WebSocket connect failed: %s" % error_string(err)
+	else:
+		hint_label.text = "Neige das Gerät, um die Farbe anzupassen"
+
+
+func _return_to_menu() -> void:
+	get_tree().change_scene_to_file(MENU_SCENE)
+
+
+func _new_target_color() -> void:
+	_target_hue = randf()
+	target_rect.color = Color.from_hsv(_target_hue, 0.75, 0.85)
+
+
+func _physics_process(_delta: float) -> void:
+	_socket.poll()
+
+	if _socket.get_ready_state() == WebSocketPeer.STATE_OPEN:
+		while _socket.get_available_packet_count() > 0:
+			var packet := _socket.get_packet().get_string_from_utf8()
+			_handle_accel_message(packet)
+	elif _socket.get_ready_state() == WebSocketPeer.STATE_CLOSED:
+		_socket.connect_to_url(WS_URL)
+
+	var hue := fmod(float(_accel.x) / 20000.0 + 1.0, 1.0)
+	color_rect.color = Color.from_hsv(hue, 0.75, 0.85)
+
+	var diff := absf(hue - _target_hue)
+	diff = minf(diff, 1.0 - diff)
+	if diff < 0.04:
+		hint_label.text = "Treffer! Neues Ziel…"
+		_new_target_color()
+	else:
+		hint_label.text = "Passe deine Farbe der Zielfarbe an (Neigung steuert den Farbton)"
+
+
+func _handle_accel_message(text: String) -> void:
+	var data = JSON.parse_string(text)
+	if typeof(data) != TYPE_DICTIONARY:
+		return
+	if data.get("type") != "accel" or not data.get("success", false):
+		return
+	if not data.has("x") or not data.has("y") or not data.has("z"):
+		return
+
+	_accel = Vector3i(int(data["x"]), int(data["y"]), int(data["z"]))
diff --git a/scripts/color_game.gd.uid b/scripts/color_game.gd.uid
new file mode 100644
index 0000000..7486674
--- /dev/null
+++ b/scripts/color_game.gd.uid
@@ -0,0 +1 @@
+uid://gya8sitagfna
diff --git a/scripts/config.gd b/scripts/config.gd
new file mode 100644
index 0000000..32d6c43
--- /dev/null
+++ b/scripts/config.gd
@@ -0,0 +1,19 @@
+extends Control
+
+const MENU_SCENE := "res://scenes/menu.tscn"
+const WS_URL := "ws://localhost:9090/ws"
+
+@onready var back_button: Button = $UiLayer/BackButton
+@onready var ws_url_label: Label = $UiLayer/Panel/WSUrlLabel
+@onready var viewport_label: Label = $UiLayer/Panel/ViewportLabel
+
+
+func _ready() -> void:
+	back_button.pressed.connect(_return_to_menu)
+	ws_url_label.text = "WebSocket: %s" % WS_URL
+	var size := get_viewport_rect().size
+	viewport_label.text = "Viewport: %d × %d" % [int(size.x), int(size.y)]
+
+
+func _return_to_menu() -> void:
+	get_tree().change_scene_to_file(MENU_SCENE)
diff --git a/scripts/config.gd.uid b/scripts/config.gd.uid
new file mode 100644
index 0000000..cdea307
--- /dev/null
+++ b/scripts/config.gd.uid
@@ -0,0 +1 @@
+uid://cdjjsf3f0o2ex
diff --git a/scripts/demo.gd b/scripts/demo.gd
new file mode 100644
index 0000000..71ed575
--- /dev/null
+++ b/scripts/demo.gd
@@ -0,0 +1,418 @@
+extends Control
+
+const WS_URL := "ws://localhost:8081/ws"
+const MENU_SCENE := "res://scenes/menu.tscn"
+const MAX_LOG_LINES := 200
+const TAP_FLASH_SEC := 2.0
+
+const PANEL_STYLE_NORMAL := Color(0.11, 0.12, 0.17, 1.0)
+const PANEL_BORDER_NORMAL := Color(0.22, 0.25, 0.32, 1.0)
+const PANEL_STYLE_FLASH := Color(0.32, 0.28, 0.06, 1.0)
+const PANEL_BORDER_FLASH := Color(1.0, 0.82, 0.15, 1.0)
+
+@onready var status_label: Label = $UiLayer/TopBar/StatusLabel
+@onready var log_output: TextEdit = $UiLayer/MainSplit/LogPanel/LogOutput
+@onready var stream_output: Label = $UiLayer/MainSplit/LogPanel/StreamOutput
+@onready var back_button: Button = $UiLayer/TopBar/BackButton
+@onready var interval_spin: SpinBox = $UiLayer/MainSplit/LeftPanel/Toolbar/IntervalSpin
+@onready var list_clients_btn: Button = $UiLayer/MainSplit/LeftPanel/Toolbar/ListClientsBtn
+@onready var clients_list: VBoxContainer = $UiLayer/MainSplit/LeftPanel/ClientsScroll/ClientsList
+@onready var empty_hint: Label = $UiLayer/MainSplit/LeftPanel/ClientsScroll/ClientsList/EmptyHint
+@onready var start_stream_btn: Button = $UiLayer/MainSplit/LeftPanel/StreamBar/StartStreamBtn
+@onready var stop_stream_btn: Button = $UiLayer/MainSplit/LeftPanel/StreamBar/StopStreamBtn
+
+var _socket := WebSocketPeer.new()
+var _connected := false
+var _streaming := false
+var _log_lines: PackedStringArray = []
+var _client_ui: Dictionary = {}
+
+
+func _ready() -> void:
+	back_button.pressed.connect(_return_to_menu)
+	list_clients_btn.pressed.connect(func(): _send({"type": "list_clients"}))
+	start_stream_btn.pressed.connect(_start_stream)
+	stop_stream_btn.pressed.connect(_stop_stream)
+	_connect_ws()
+
+
+func _return_to_menu() -> void:
+	get_tree().change_scene_to_file(MENU_SCENE)
+
+
+func _connect_ws() -> void:
+	_connected = false
+	var err := _socket.connect_to_url(WS_URL)
+	if err != OK:
+		_set_status("Verbindung fehlgeschlagen: %s" % error_string(err))
+	else:
+		_set_status("Verbinde mit %s…" % WS_URL)
+
+
+func _interval_ms() -> int:
+	return int(interval_spin.value)
+
+
+func _send(payload: Dictionary) -> void:
+	if _socket.get_ready_state() != WebSocketPeer.STATE_OPEN:
+		_log("Nicht verbunden – Befehl verworfen: %s" % payload.get("type", "?"))
+		return
+	var text := JSON.stringify(payload)
+	_socket.send_text(text)
+	_log("→ %s" % text)
+
+
+func _start_stream() -> void:
+	if _client_ui.is_empty():
+		_log("Keine Clients geladen")
+		return
+
+	var want_accel := false
+	var want_tap := false
+
+	for cid in _client_ui:
+		var ui: Dictionary = _client_ui[cid]
+		if not ui.get("available", false):
+			continue
+
+		var accel_on: bool = ui["accel_cb"].button_pressed
+		_send({"type": "set_accel_stream", "client_id": cid, "enable": accel_on})
+		if accel_on:
+			want_accel = true
+
+		var tap_single: bool = ui["tap_single"].button_pressed
+		var tap_double: bool = ui["tap_double"].button_pressed
+		var tap_triple: bool = ui["tap_triple"].button_pressed
+		var tap_on := tap_single or tap_double or tap_triple
+		_send({
+			"type": "set_tap_notify",
+			"client_id": cid,
+			"single": tap_single,
+			"double_tap": tap_double,
+			"triple": tap_triple,
+		})
+		if tap_on:
+			want_tap = true
+
+	_send({"type": "set_stream", "enable": want_accel, "interval_ms": _interval_ms()})
+	_send({"type": "set_tap_stream", "enable": want_tap, "interval_ms": _interval_ms()})
+
+	_streaming = true
+	start_stream_btn.disabled = true
+	stop_stream_btn.disabled = false
+	_log("Stream gestartet (accel=%s, tap=%s)" % [want_accel, want_tap])
+
+
+func _stop_stream() -> void:
+	_send({"type": "set_stream", "enable": false, "interval_ms": _interval_ms()})
+	_send({"type": "set_tap_stream", "enable": false, "interval_ms": _interval_ms()})
+
+	for cid in _client_ui:
+		var ui: Dictionary = _client_ui[cid]
+		if not ui.get("available", false):
+			continue
+		_send({"type": "set_accel_stream", "client_id": cid, "enable": false})
+		_send({
+			"type": "set_tap_notify",
+			"client_id": cid,
+			"single": false,
+			"double_tap": false,
+			"triple": false,
+		})
+		ui["values_label"].text = "—"
+
+	_streaming = false
+	start_stream_btn.disabled = _client_ui.is_empty()
+	stop_stream_btn.disabled = true
+	stream_output.text = "—"
+	_log("Stream gestoppt")
+
+
+func _clear_client_panels() -> void:
+	_client_ui.clear()
+	for child in clients_list.get_children():
+		if child != empty_hint:
+			child.queue_free()
+
+
+func _populate_clients(clients: Array) -> void:
+	_clear_client_panels()
+	var has_available := false
+
+	for entry in clients:
+		if typeof(entry) != TYPE_DICTIONARY:
+			continue
+		var cid := int(entry.get("id", 0))
+		if cid <= 0:
+			continue
+
+		var available: bool = entry.get("available", false)
+		if available:
+			has_available = true
+
+		var panel := PanelContainer.new()
+		panel.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+		var normal_style := _make_panel_style(PANEL_STYLE_NORMAL, PANEL_BORDER_NORMAL, 1)
+		var flash_style := _make_panel_style(PANEL_STYLE_FLASH, PANEL_BORDER_FLASH, 2)
+		panel.add_theme_stylebox_override("panel", normal_style)
+
+		var margin := MarginContainer.new()
+		margin.add_theme_constant_override("margin_left", 10)
+		margin.add_theme_constant_override("margin_right", 10)
+		margin.add_theme_constant_override("margin_top", 8)
+		margin.add_theme_constant_override("margin_bottom", 8)
+		panel.add_child(margin)
+
+		var vbox := VBoxContainer.new()
+		vbox.add_theme_constant_override("separation", 6)
+		margin.add_child(vbox)
+
+		var mac: String = str(entry.get("mac", "?"))
+		var status := "online" if available else "offline"
+		var header := Label.new()
+		header.text = "Client #%d  ·  %s  ·  %s" % [cid, mac, status]
+		header.add_theme_font_size_override("font_size", 14)
+		header.add_theme_color_override("font_color", Color(0.9, 0.92, 0.98) if available else Color(0.55, 0.58, 0.65))
+		vbox.add_child(header)
+
+		var accel_cb := CheckBox.new()
+		accel_cb.text = "Accel Stream"
+		accel_cb.button_pressed = entry.get("accel_stream", false)
+		accel_cb.disabled = not available
+		vbox.add_child(accel_cb)
+
+		var tap_label := Label.new()
+		tap_label.text = "Tap Notify:"
+		tap_label.add_theme_font_size_override("font_size", 12)
+		tap_label.add_theme_color_override("font_color", Color(0.7, 0.75, 0.85))
+		vbox.add_child(tap_label)
+
+		var tap_row := HBoxContainer.new()
+		tap_row.add_theme_constant_override("separation", 12)
+		vbox.add_child(tap_row)
+
+		var tap_single := CheckBox.new()
+		tap_single.text = "Single"
+		tap_single.button_pressed = entry.get("tap_notify_single", false)
+		tap_single.disabled = not available
+
+		var tap_double := CheckBox.new()
+		tap_double.text = "Double"
+		tap_double.button_pressed = entry.get("tap_notify_double", false)
+		tap_double.disabled = not available
+
+		var tap_triple := CheckBox.new()
+		tap_triple.text = "Triple"
+		tap_triple.button_pressed = entry.get("tap_notify_triple", false)
+		tap_triple.disabled = not available
+
+		tap_row.add_child(tap_single)
+		tap_row.add_child(tap_double)
+		tap_row.add_child(tap_triple)
+
+		var values_label := Label.new()
+		values_label.text = "—"
+		values_label.add_theme_font_size_override("font_size", 12)
+		values_label.add_theme_color_override("font_color", Color(0.65, 0.85, 0.75))
+		values_label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
+		vbox.add_child(values_label)
+
+		clients_list.add_child(panel)
+
+		_client_ui[cid] = {
+			"available": available,
+			"panel": panel,
+			"normal_style": normal_style,
+			"flash_style": flash_style,
+			"flash_token": 0,
+			"accel_cb": accel_cb,
+			"tap_single": tap_single,
+			"tap_double": tap_double,
+			"tap_triple": tap_triple,
+			"values_label": values_label,
+			"last_tap": "",
+		}
+
+	empty_hint.visible = _client_ui.is_empty()
+	start_stream_btn.disabled = _client_ui.is_empty() or not has_available or _streaming
+	_log("%d Client(s) geladen" % _client_ui.size())
+
+
+func _physics_process(_delta: float) -> void:
+	_socket.poll()
+	var state := _socket.get_ready_state()
+
+	if state == WebSocketPeer.STATE_OPEN:
+		while _socket.get_available_packet_count() > 0:
+			_handle_message(_socket.get_packet().get_string_from_utf8())
+
+	match state:
+		WebSocketPeer.STATE_OPEN:
+			if _connected:
+				_set_status("Verbunden · %s" % WS_URL)
+		WebSocketPeer.STATE_CONNECTING:
+			_set_status("Verbinde…")
+		WebSocketPeer.STATE_CLOSING, WebSocketPeer.STATE_CLOSED:
+			_connected = false
+			_streaming = false
+			start_stream_btn.disabled = _client_ui.is_empty()
+			stop_stream_btn.disabled = true
+			_set_status("Getrennt – erneuter Verbindungsversuch…")
+			if state == WebSocketPeer.STATE_CLOSED:
+				_connect_ws()
+
+
+func _handle_message(text: String) -> void:
+	var data = JSON.parse_string(text)
+	if typeof(data) != TYPE_DICTIONARY:
+		_log("← (ungültiges JSON) %s" % text.substr(0, mini(text.length(), 120)))
+		return
+
+	var msg_type: String = data.get("type", "")
+	match msg_type:
+		"hello":
+			_on_hello(data)
+		"client_list":
+			_on_client_list(data)
+		"accel":
+			_on_accel(data)
+		"tap":
+			_on_tap(data)
+		_:
+			if not _streaming or not msg_type.ends_with("_status"):
+				_log("← %s" % _format_response(data))
+
+
+func _on_hello(data: Dictionary) -> void:
+	_connected = true
+	if data.has("interval_ms"):
+		interval_spin.value = int(data["interval_ms"])
+	_log("← hello (Port: %s)" % data.get("serial_port", "?"))
+
+
+func _on_client_list(data: Dictionary) -> void:
+	if not data.get("success", false):
+		_log("← client_list FAILED: %s" % data.get("error", "?"))
+		return
+	_populate_clients(data.get("clients", []))
+
+
+func _on_accel(data: Dictionary) -> void:
+	if not data.get("success", false):
+		stream_output.text = "accel FEHLER: %s" % data.get("error", "?")
+		return
+
+	var summary: PackedStringArray = []
+	for client in data.get("clients", []):
+		if typeof(client) != TYPE_DICTIONARY:
+			continue
+		var cid := int(client.get("client_id", 0))
+		if not _client_ui.has(cid):
+			continue
+
+		var ui: Dictionary = _client_ui[cid]
+		var tap_part: String = ui.get("last_tap", "")
+		if client.get("valid", false):
+			var accel_text := "x=%d y=%d z=%d (age %sms)" % [
+				int(client.get("x", 0)),
+				int(client.get("y", 0)),
+				int(client.get("z", 0)),
+				str(client.get("age_ms", "?")),
+			]
+			ui["values_label"].text = accel_text + ("\n" + tap_part if tap_part else "")
+			summary.append("#%d: %s" % [cid, accel_text])
+		else:
+			ui["values_label"].text = "accel: —" + ("\n" + tap_part if tap_part else "")
+
+	if summary.is_empty():
+		stream_output.text = "accel (keine gültigen Samples)"
+	else:
+		stream_output.text = "accel\n" + "\n".join(summary)
+
+
+func _on_tap(data: Dictionary) -> void:
+	if not data.get("success", false):
+		return
+
+	var summary: PackedStringArray = []
+	for event in data.get("events", []):
+		if typeof(event) != TYPE_DICTIONARY:
+			continue
+		var cid := int(event.get("client_id", 0))
+		if not _client_ui.has(cid):
+			continue
+
+		var tap_text := "tap: %s (age %sms)" % [str(event.get("kind", "?")), str(event.get("age_ms", "?"))]
+		var ui: Dictionary = _client_ui[cid]
+		ui["last_tap"] = tap_text
+
+		var existing: String = ui["values_label"].text
+		if existing == "—" or existing.begins_with("accel: —"):
+			ui["values_label"].text = tap_text
+		elif "\n" in existing:
+			ui["values_label"].text = existing.split("\n", false, 1)[0] + "\n" + tap_text
+		else:
+			ui["values_label"].text = existing + "\n" + tap_text
+
+		summary.append("#%d: %s" % [cid, tap_text])
+		_flash_client_panel(cid)
+
+	if not summary.is_empty():
+		stream_output.text = "tap\n" + "\n".join(summary)
+
+
+func _make_panel_style(bg: Color, border: Color, border_width: int) -> StyleBoxFlat:
+	var style := StyleBoxFlat.new()
+	style.bg_color = bg
+	style.border_color = border
+	style.set_border_width_all(border_width)
+	style.set_corner_radius_all(6)
+	style.set_content_margin_all(0)
+	return style
+
+
+func _flash_client_panel(cid: int) -> void:
+	if not _client_ui.has(cid):
+		return
+
+	var ui: Dictionary = _client_ui[cid]
+	var panel: PanelContainer = ui["panel"]
+	panel.add_theme_stylebox_override("panel", ui["flash_style"])
+
+	ui["flash_token"] = int(ui.get("flash_token", 0)) + 1
+	var token: int = ui["flash_token"]
+	get_tree().create_timer(TAP_FLASH_SEC).timeout.connect(
+		func() -> void:
+			if not _client_ui.has(cid):
+				return
+			var current: Dictionary = _client_ui[cid]
+			if int(current.get("flash_token", 0)) != token:
+				return
+			current["panel"].add_theme_stylebox_override("panel", current["normal_style"]),
+		CONNECT_ONE_SHOT
+	)
+
+
+func _format_response(data: Dictionary) -> String:
+	var msg_type: String = data.get("type", "?")
+	if not data.get("success", true) and data.has("error"):
+		return "%s FAILED: %s" % [msg_type, data["error"]]
+	return JSON.stringify(data)
+
+
+func _set_status(text: String) -> void:
+	status_label.text = text
+
+
+func _log(text: String) -> void:
+	var line := "[%s] %s" % [_time_str(), text]
+	_log_lines.append(line)
+	while _log_lines.size() > MAX_LOG_LINES:
+		_log_lines.remove_at(0)
+	log_output.text = "\n".join(_log_lines)
+	log_output.set_caret_line(log_output.get_line_count() - 1)
+
+
+func _time_str() -> String:
+	var t := Time.get_time_dict_from_system()
+	return "%02d:%02d:%02d" % [t.hour, t.minute, t.second]
diff --git a/scripts/demo.gd.uid b/scripts/demo.gd.uid
new file mode 100644
index 0000000..e145a56
--- /dev/null
+++ b/scripts/demo.gd.uid
@@ -0,0 +1 @@
+uid://cl77don5tdl5h
diff --git a/scripts/main.gd.uid b/scripts/main.gd.uid
deleted file mode 100644
index 89ae20d..0000000
--- a/scripts/main.gd.uid
+++ /dev/null
@@ -1 +0,0 @@
-uid://g8bye3sv5ifc
diff --git a/scripts/menu.gd b/scripts/menu.gd
new file mode 100644
index 0000000..d468edd
--- /dev/null
+++ b/scripts/menu.gd
@@ -0,0 +1,28 @@
+extends Control
+
+const DEMO_SCENE := "res://scenes/demo.tscn"
+const CONFIG_SCENE := "res://scenes/config.tscn"
+const PONG_SCENE := "res://scenes/pong.tscn"
+const COLOR_GAME_SCENE := "res://scenes/color_game.tscn"
+
+@onready var demo_button: Button = $CenterBox/DemoButton
+@onready var config_button: Button = $CenterBox/ConfigButton
+@onready var pong_button: Button = $CenterBox/PongButton
+@onready var color_game_button: Button = $CenterBox/ColorGameButton
+@onready var exit_button: Button = $CenterBox/ExitButton
+
+
+func _ready() -> void:
+	demo_button.pressed.connect(func(): _open_scene(DEMO_SCENE))
+	config_button.pressed.connect(func(): _open_scene(CONFIG_SCENE))
+	pong_button.pressed.connect(func(): _open_scene(PONG_SCENE))
+	color_game_button.pressed.connect(func(): _open_scene(COLOR_GAME_SCENE))
+	exit_button.pressed.connect(_exit_game)
+
+
+func _open_scene(path: String) -> void:
+	get_tree().change_scene_to_file(path)
+
+
+func _exit_game() -> void:
+	get_tree().quit()
diff --git a/scripts/menu.gd.uid b/scripts/menu.gd.uid
new file mode 100644
index 0000000..e9f759b
--- /dev/null
+++ b/scripts/menu.gd.uid
@@ -0,0 +1 @@
+uid://b32rtcn0rpvii
diff --git a/scripts/main.gd b/scripts/pong.gd
similarity index 97%
rename from scripts/main.gd
rename to scripts/pong.gd
index 1f2db2d..aa45191 100644
--- a/scripts/main.gd
+++ b/scripts/pong.gd
@@ -13,6 +13,7 @@ enum GameState { CALIBRATION, PLAYING }
 @onready var threshold_panel: Control = $UiLayer/ThresholdPanel
 @onready var calibration_overlay: Control = $UiLayer/CalibrationOverlay
 @onready var recalib_button: Button = $UiLayer/RecalibButton
+@onready var menu_button: Button = $UiLayer/MenuButton
 
 var _socket := WebSocketPeer.new()
 var _velocity_x := 0.0
@@ -21,6 +22,7 @@ var _state := GameState.CALIBRATION
 var _calibration := AccelCalibration.new()
 
 const WS_URL := "ws://localhost:9090/ws"
+const MENU_SCENE := "res://scenes/menu.tscn"
 const MAX_SPEED := 900.0
 const FRICTION := 0.9
 const PLATFORM_HALF_WIDTH := 80.0
@@ -40,6 +42,7 @@ func _ready() -> void:
 
 	calibration_overlay.calibration_finished.connect(_on_calibration_finished)
 	recalib_button.pressed.connect(_restart_calibration)
+	menu_button.pressed.connect(_return_to_menu)
 	calibration_overlay.start()
 
 	var err := _socket.connect_to_url(WS_URL)
@@ -49,6 +52,10 @@ func _ready() -> void:
 		status_label.text = "Connecting to %s…" % WS_URL
 
 
+func _return_to_menu() -> void:
+	get_tree().change_scene_to_file(MENU_SCENE)
+
+
 func _physics_process(delta: float) -> void:
 	_socket.poll()
 	_update_connection_status()
diff --git a/scripts/pong.gd.uid b/scripts/pong.gd.uid
new file mode 100644
index 0000000..c1e8b5b
--- /dev/null
+++ b/scripts/pong.gd.uid
@@ -0,0 +1 @@
+uid://bs5f1aw8bcqbf