My game Loop Zen just Launched in the iOS AppStore this afternoon. It's a minimal arcade game with 8 endless levels. Each level starts off simple and quickly ramps up in difficulty. Its definitely the type of game where your high score is everything. I incorporated GameCenter Leaderboards and Achievements into all 8 modes to keep things competitive. The game can be downloaded at http://bit.ly/LoopZen I look forward to seeing you guys in the leaderboards. Here is a gif from the 2rd Mode. Thanks!