There will be random square numbers 1-9 on random areas of the screen. You have to memorize the order of them. Once you press space, the numbers will be blank, and you have to click the right squares from 1-9. If you click the wrong square, it will count as a strike. 3 strikes and it's game over.
This game was inspired by a study that proved that chimpanzees outperform humans playing a game that is similar to this one.