GamingShogun writes, "Valve, creators of best-selling game franchises (such as Half-Life, Portal, Team Fortress and Counter-Strike) and leading technologies (such as Steam and Source), today announced the PC version of its highly anticipated new survival co-op game, Left 4 Dead, is available for pre-purchase worldwide via Steam, a leading online platform for the distribution and management of PC games with over 15 million accounts worldwide..."
