Quadrapassel is a derivative of a classic Russian falling-block game.
Reposition and rotate the blocks as they fall, and attempt to fit them
together. When you form a complete horizontal row of blocks, the row will
disappear and you score points. The game is over when the blocks get stacked
too high. As your score gets higher, you level up and the blocks fall faster.
If you're looking for a challenge, Quadrapassel allows you to increase the
initial speed of the blocks, or begin the game with partial blocks on some
of the rows. Or, instead of allowing the blocks to fall randomly, it can
select blocks that will be hard for you to place.