Rubik's cube

How to play

• Turn a layer — click (or tap) a sticker and drag. The cube snaps to 90°.
• Inspect every face — use the on-cube arrows, or tap U D F B L R to look straight at that side.
• Put a colour on the bottom — tap a colour under Controls so white can sit on the bottom, just as on a physical cube.
• Spin the camera — turn on Spin cube, then drag anywhere. Right-drag always orbits the view without turning a layer.
• Keys — U D L R F B for faces, x y z to turn the whole cube. Shift for a prime turn, Alt for 180°.
• Why it stays legal — pieces never split. Every move is a quarter-turn of a layer.