Love Tetris but looking for the next challenge? Then Tetris Ultimate for 3DS by Ubisoft is the game for you. Tetris Ultimate has six 6 modes that increase in difficulty as you play. These modes are: Marathon - (15 levels ) complete as many lines as possible. The more lines you complete, the more levels you finish (you must complete Marathon to unlock Endless); Sprint - make 40 complete lines as... more.