Any iPhone Game Recommendations?

[11clock]

I received a $15 iTunes gift card for Christmas, and I plan on spending it on iPhone games (since I don't use my iPod touch for other purposes). I plan on buying Rayman Jungle Run because it's apparently very good. However, I don't know what else I should get.

Do you have any recommendations? I'm currently into platformers, real-time roguelikes, metroidvanias, and RPGs with interesting battle systems that don't involve much grinding (preferably ones that don't have random encounters).

[Matty_Richo]

Tiny Wings, Swordigo, Alien Breed, The Last Express, Grand Theft Auto: Vice City.

[T-Rok]

Plague Inc.
Trigger Fist

There's obviously tons more, but currently these are the only ones on my phone.

[Turkey]

I'm not big on mobile games, but one that comes to mind is World of Goo