Carbon - Create and share beautiful images of your source code.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
RNI Films - Real film filters for iPhone photographers
Quake - Quake is a series of first-person shooter video games released by id Software.
infltr - Discover Infinite Filters for every Picture!
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.