Ah, sweet sweet Peggle. This game devoured hours of my time on the PC, and when it came to the app store, it devoured many more. If you're unfamiliar with Peggle, then you've seriously been missing out. It's a game that can only be described as Plinko from the Price is right mixed with Pinball plus a little PCP.
You're main objective is to hit each and every orange peg on a board; hit them all and you go into EXTREME FEVER which is honestly the coolest thing in the world. No wait, ULTRA EXTREME FEVER is. Anyway, the app is only $0.99 and is sure to steal many hours of your free time.