Valve has announced that Steam users who pre-purchase Ubisoft's EndWar from Steam before it launches on February 26 will receive Tom Clancy's Ghost Recon Advanced Warfighter absolutely free.

EndWar is a revolutionary RTS in which the player takes control of the battlefield using their voice in addition to the more traditional keyboard and mouse controls.

Tom Clancy's EndWar is available to pre-purchase now priced £34.99.