My little niece is almost 3 years old now. She loves watching the screen of my computer when I play videogames and also smashing the control panel and moving the stick. Now I'm trying to make her understand how to play. I've tried with colourfull and simple shoot'em ups and also with Pacman. She understands when I tell her right!, left!, up!, down.!.. and she moves the stick in the right direction, but I'm not sure if she's able to understand that the sprite (which she follows with her eyes when I tell her so) moves according to what you do with the stick. At what age should I expect her to understand this? How could I teach her? I don't know what other games would be better for this, so advice is appreciated. I've heard some kind of chimpanzees were able to understand how to play pacman and the fact that they have to escape from the ghosts and even that they can pursuit them after eating the big pills, which is really impressive. So, I hope my niece is able to reach the primate level soon.