Tetrinet

Tetrinet is a PC based online multiplayer tetromino game, similar to Tetris, available as a free download. It is notable for its 12-block-wide playfield, which is wider than the average tetromino game's playfield, as well as its items, which players can use to attack other players.

............ ............ ...........J ...........J ...........J TOOS.......J TOOS.JJOZZ.. TTSSJJOOOZZ.