Move pieces with the arrow keys (or A/D). Soft drop: Down. Hard drop: Space. Rotate: Up / X (CW), Z (CCW). Hold: C. Pause: P or Esc. Restart: R. Mute: M.
On touch screens: touch & drag the board - your finger positions the piece sideways (column by column), drag down to soft drop, flick up fast to hard drop. Tap the left half of the board to rotate CCW, right half to rotate CW.
Clear lines to score. In Guideline mode: t-spins, back-to-backs and combos give bonus points. Level up every 10 lines - the game speeds up.
Every screen is fully keyboard-usable: arrows + Enter navigate menus, Esc backs out.