This is a game called The Cube, it's simple, press the arrow keys according to what the cube tells you before time runs out. You'll gain one point for a correct answer, and loose two points for a wrong answer. What score can you get? Oh, and the cube will try to trick you, read carefully. Always remember two not's cancel each other out!
The idea came from somewhere, but I can't remember where. The text engine came from Griffpatch