Easily swap Half-Life and Counter-Strike cd-keys.
Improve the configuration of your computer to perform better in online games.
Modification of the Tibia client that makes the game based on the Dragon Ball anime.
Use your Playstation 4 controller on your computer.
While Diablo 3 doesn't arrive, how about getting your Windows 7 in the mood while you wait for its launch?
Mod for GTA V that modifies the hydraulic system so that they jump.