The number of truly free and open source games available for download is small in general, but in terms of genre, first-person shooters (FPS) have plenty of representation. This is largely due to the 3D engines that have been released into the free software community, which lend themselves well to FPS games. The Cube Engine 2 is one such 3D system, and Red Eclipse is the latest FPS to utilize it. Version 1.0 of Red Eclipse was just released a few weeks ago, and I decided to give it a try. It is free to download for Linux, BSD, Mac OS X, and Windows