Puyo Puyo

The game's story mode follows the adventure about Amitie, a spunky girl who attends a magic school, where she is taught by Ms. Accord how to cast magical spells using Puyos, which are blob-like jelly creatures of varying colours and facial expressions. Magicians using Puyos for battle have a field in which groups of Puyos can fall (much like Tetris) and must be arranged to "pop" them, which occurs when they arrange in certain patterns so that four of the same colour touch each other. This casts a "spell," which will disrupt the opponent's Puyo arena. The loser is determined when one of the middle two columns on his or her field fills up to the top. (Courtesy of Wikipedia)