Counter-Strike: Global Offensive
is 10 percent off on Steam until August 21, which also happens to be the game's release date
. The game is currently $13.49, instead of the standard $15, which is what it'll be at launch on PC, Mac, PS3 and Xbox 360 (where it'll be 1200 MS Points)
Since the Counter-Strike: Global Offensive software development kit
, launching a few months after the game, isn't likely to play nice with consoles, it may be best to get the game on PC. Stretch that investment as far as it'll go.