Tetris is a game that has been around for a long time, so this game need not have a huge spiel about how to play the game or what it involves. This simply, is the original puzzle game tetris with a few added extras to help make the game seem more interesting. You can use either Bart or Lisa for your screen to play in, and you race against the computer.. first one to reach the top loses. The speed of the game is slightly different depending on the machine, but the difference between running it on a 486 as opposed to a P3 850 is quite minimal so no slowdown utilities are needed.