FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Quake - Quake is a series of first-person shooter video games released by id Software.
Photoscape - high quality photo editing software, that enables you to fix and enhance photos.
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.