Lifeline - Lifeline is a playable, branching story of survival against all odds.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Clannad - Clannad is a Japanese visual novel developed by Key and released on April 28, 2004 for Windows PCs.
Quake - Quake is a series of first-person shooter video games released by id Software.
Katawa Shoujo - Katawa Shoujo is a bishoujo-style visual novel set in the fictional Yamaku High School for disabled...
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.