Turrets!
Turrets! is a game I wrote for the iPhone, it was my first serious attempt at an Objective C application. It utilizes Open GL ES for all of its graphics, and the basis of this game was brought over from my JASEL game engine.
Turrets! is still under development. Version 1.0 was released to the store, in February. The new version will have greatly refactored code, bonus levels, and support for a lot of requests people have made for it.
Trunk is a mess
Currently trunk does not compile and is in the middle of a rather large refactoring I am doing in order to support new features. If you want a working version, check the v1.0.1rtm tag. This is the version that was released to the app store.