Choosing to buy a middleware game engine for your next game is the most important technology decision you will likely make for your project. How can you evaluate engines properly? What should you do before looking at engines? This talk covers a framework for evaluating game engines, based on a developer survey conducted in early 2009. It also goes through a bit on the history of game engines. Alas, without notes or audio, there are a lot of things missing from this presentation. But hopefully you will find it helpful!