There is a game in appstore called Ragnar Rock: Thor´s Revenge. It is an Angry Birds clone of sorts, but instead of chucking birds, you get to be Thor throwing axes hammers etc. on the dwarves that together with Loki has stolen Thors hammer.
And yes, I know some of the people that made this game, so this post is a bit of a spammer, but in all honesty, if a Thor fan of any kind, this game will make you smile, and have some good old fun :)
AppSafari did a review of it, so read that before getting to mad about my spamming to help my friends a bit :)