We have good news for all the ‘Left 4 Dead’ fans out there, Valve just announced a little bit ago that the upcoming Survivial Pack DLC for ‘Left 4 Dead‘ will be available free of charge to PC and 360 gamers alike. The Survivial Pack will add a new Survival mode where you and a group of friends try to survive wave and wave of zombie attacks for as long as you can. This horde-like mode is sure to add a whole new level of enjoyment to the multiplayer experience.  Along with the new mode the Dead Air and Death Toll campaigns will be made available for versus gameplay.

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