Game for Cousin

I need to buy my cousin a birthday present and it is his birthday next week. I would usually know a game to buy him but he is only going to be 10 so i dont know what to buy him. He prefers single player games and does not have online for the ps3 (yet, I am not sure if he is going to get it). He is allowed 15/16+ games. So if you can help please do.

Thanks

Ratchet and Clank Future: A Crack in Time sounds perfect for his situation. It's rated Everyone +10 by the ESRB, and it's all a single player campaign. Also Little Big Planet is a great game for all ages, but it really spices things up if you have an online.