Adapt: 3D to 2D Expert guidance for simplifying 3D games into 2D (or 2.5D). NEVER Do - NEVER remove Z-axis without gameplay compensation — Blindly flattening 3D to 2D removes spatial strategy. Add other depth mechanics (layers, jump height variations). - NEVER keep 3D collision shapes — Use simpler 2D shapes (CapsuleShape2D, RectangleShape2D). 3D shapes don't convert automatically. - NEVER use orthographic Camera3D as "2D mode" — Use actual Camera2D for proper 2D rendering pipeline and performance. - NEVER assume automatic performance gain — Poorly optimized 2D (too many draw calls, large spr…