In Stax Tetris your job is to complete all Tetris modes possible. In fact, you can play whichever mode you like, but here you have many different Tetris modes that you can choose from. Use the keyboard arrow keys to rotate and move the Tetris shapes and press Space Bar to drop it down. If you feel like you are the best in the Classic mode then go for it! If you think that the Time Trial is what you are looking for then play that one. Either way you will have tones of fun with Stax Tetris.