Tetris

Use arrow keys or the on-screen buttons to control pieces.
Left / Right — move the piece sideways.
Up — rotate the piece.
Down — soft drop (move piece down faster).
Space — hard drop (instantly drop the piece).
On touchscreens you can also swipe on the board: left/right to move, up to rotate, down to soft drop, or tap to hard drop.
Clear complete rows to score points. More rows at once = more points!
Speed increases with each level.
Level up every 10 lines cleared.
Choose a difficulty above the board to change starting speed.

Game Over!