JUNIOR/INTERMEDIATE MATHEMATICS TETRIS XXIV This game is similar to other Tetris-type games, except that it uses numbers. Lines are eliminated by aligning 2 numbers whose product is 24 (e.g., 3 and 8, 6 and 4, 12 and 2). While it provides practice in multiplication skills, the emphasis is on FUN! EXIT: Press the 'Esc' key and then 'Y' to leave the program.