The sequel to Tetris, Welltris applies many of the same ideas evident in the earlier game to a three-dimensional format. Though the game consists of little more than merely changing the perspective (instead of a side view of the well as the pieces fall, you are at the top of the well looking down), it is still interesting and challenging in its own right, though it isn't as fast-paced, fun, or addictive as Tetris. If you are a big fan of Tetris, you may enjoy this game, but unless you are quite familiar with it, you probably won't enjoy this game as much as you should.