Flip your way to fun with Gravity Guy, one of the most popular platformer games in the App Store. And it's free!
You got the escape from the Gravity troops and the only way to do that is by running through the countless corridors in front of you. I'm not sure who would design such a dumb structure but architecture may not be the biggest skill possessed by alien races.
Check out some of the game's features:
★ Amazing graphics
★ Game Center Leader Boards and Achievements
★ Local multiplayer mode up to 4 players
★ Online multiplayer mode for 2 players
★ Three game modes Story, Practice and Endless
★ Game music, which automatically switches itself off at start when playing other music on your iPod/iPhone
★ Local+Global high-scores lists
★ Interactive tutorial to learn how to play