Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Pocket Frogs - Pocket Frogs is an Addictive, Hunter, Breeding, Training, and Single-player Simulation developed and published by NimbleBit LLC.
Quake - Quake is a series of first-person shooter video games released by id Software.
Mighty Monsters - Mighty Monsters offers a fantastic combination of Adventure-based Puzzles and RPG elements and takes you to a wonderfully colorful world filled with a number of different monsters and creatures.
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
Monster Galaxy: The Zodiac Islands - Monster Galaxy: The Zodiac Islands is enticing new Adventure, Puzzle and RPG video game by the popular Gaia Interactive Inc.