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Enable 3D Boards

Layered boards let words bend through depth while reusing the same move validation stack.

  1. Switch the geometry. Set board_layout to { "type": "3d", "width": 11, "height": 11, "depth": 4 }.
  2. Handle rendering. The Playground’s “Runtime & Board Layout” controls expose both the Depth input and Slice z slider; Unity and Godot demos already map layers to camera rigs.
  3. Extend bonuses. Bonus definitions accept a z coordinate so you can reserve multipliers for higher layers.
  4. Test deterministically. Include depth in serialized snapshots and run the Playwright regression to ensure all layers render.
board.json
{
  "board_layout": {
    "type": "3d",
    "width": 11,
    "height": 11,
    "depth": 4
  }
}

Quick preview​

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Letters vary by layer to demonstrate the slider.