Puzzle fans rejoice! The all-time puzzle favorite has returned! Tetris DX has everything you need to satisfy your puzzle appetite. Play MARATHON, the classic Tetris game. Try your hand at ULTRA or 40 LINES, two Tetris games with a twist. The VS. game will have you playing for hours! It that's not enough, Tetris DX is fully compatible with the new Game Boy® Color system! With the Game Link® cable, you can exchange saved information from one system to another! That's right, battery-backed memory saves up to three game files. Now your high scores will live on forever!