Different shaped pieces will fall from the top of the screen. Fill entire rows with
dots to clear them and gain bonus points. Clear multiple rows with one
piece to get combos. Pieces will fall faster as the game goes on.
| Left Arrow: | Moves piece to the left |
| Right Arrow: | Moves piece to the left |
| Down Arrow: | Drops piece to its shadow |
| Up Arrow: | Rotates piece |
| Click: | Switches to other piece |