Extris

Extris is a simple Tetris game, with a slight twist. In the main Extris mode, you have your classic Tetrominoes, BUT you also have a few weird Pentominoes as well. There are many other modes for you to try; Pentris, A game featuring only Pentominos, Ultris, a game with all the Tetrominoes and Pentominoes combined, Hextris, a game where all of the pieces have 6 squares in them, called Hexominos, or even just your classic Tetris.