Particlescape - Particlescape app lets you create stunning patterns at your fingertips.

Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.

TripleA - TripleA is a free (under GPL) turn based strategy game based on Axis & Allies board game.

Quake - Quake is a series of first-person shooter video games released by id Software.

Fluid dynamics - Fluid dynamics developed and published by Reinder Nijhoff.

Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.