I've been playing around with Payback on my iPhone for the past week or so. The game is a top down action game very reminiscent of the original Grand Theft Auto.

Did I say reminiscent? It's really closer to a copycat. I haven't really played it enough yet to write up a formal review, but the game does seem to have some interesting things going for it.

http://kotaku.com/5141603/iphone-gets-its-gta-knock-off