Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Camera Noir - The most powerful black & white photo editor
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
Manual Camera for iPhone - Custom exposure for your iPhone camera
Quake - Quake is a series of first-person shooter video games released by id Software.
Argentum Camera - A monochrome camera with beautiful effects