In Rhythm Day, you have to move your little black cube out of the way of the little white cubes hurtling at you while a cool little song plays and the sun rises. (New white cubes show up on every chord or drumbeat.) And it is WICKED hard! Use WASD keys to move. (Note: Don't get discouraged in the first part of the game. After the initial frenzy, things slow down a little... before they pick up again.)