Controls
- Desktop: Arrow keys to move or rotate, Space to mirror, P to pause, R to restart
- Space - Mirror current piece
- J becomes L, L becomes J
- S becomes Z, Z becomes S
- Left / Right - Move piece
- Down - Hard drop
- Up - Rotate
- Mobile single tap - Rotate
- Mobile double tap - Mirror
- Swipe Left / Right - Move piece
- Swipe Down - Hard drop