Valve's Christmas gift

Valve now is gives away its wonderful game of zombie shooter, Left 4 Dead 2, for free on download service Steam.

To get your copy of the game, you’ll need to log in to a Steam account, go to Left 4 Dead 2′s store page, and then click ‘install game.’ This expires on December 26th at 10AM PT/1PM ET, this is a great occasion to get this game for free.