Cocoa with Love: An Asteroids-style game in CoreAnimation, Part One.

"How would you write an arcade-style 2D game in CoreAnimation? Over the next few weeks, I'll show you how to write a resolution independent, high-speed, model-view-controller designed, Asteroids-style arcade game using CoreAnimation as the screen renderer. In this first of four parts, I'll detail the concept for the overall application and show you how to create a resolution independent window for the game."