Gamers who still have not gotten around to trying out the action-packed zombie co-op romp that is Left 4 Dead will get a free opportunity to do so for a 24-hour period tomorrow on Steam. Valve announced that beginning at 12:01 a.m. GMT Friday, the PC version of Left 4 Dead will be available for free on Steam. The trial includes the recently released Survival Pack downloadable content, which includes a new game mode and two additional “Versus” stages.  There is no obligation to purchase, according to the release, and the game can be pre-loaded now, to avoid spending any of that 24-hour time frame downloading the title.

For more info, www.steamgames.com