Each layout opens as a ready-to-go furnished room — start playing right away, or click furniture and fixtures to add your own. Drag to move, press R (or the Rotate button) to spin a piece, Delete to remove it. Select any piece to recolor, re-texture (wood, marble, tile…) or refinish it. Switch between a 2D plan and a 3D view, then turn your design into a free renovation quote. Furniture uses real low-poly 3D models (Kenney Furniture Kit, CC0). Add your own by dropping a .glb in /models/ — see DESIGN-STUDIO-3D-PLAN.md.