Try it yourself! It basically plays just as it sounds. Old school Mario, but with a switch to Tetris which affects the gameplay entirely. The controls are basic. To switch between game modes, you press the spacebar. To jump in the Mario mode, you press the "S" key, and to move the tetrominoes and Mario, you just use the arrow keys. http://www.ebaumsworld.com/games/play/80869465/