Happy Zombie Apocalypse Survivor Appreciation Day!

Hurray for fictional but cool sounding holidays, they're the new internet rage! Today we're celebrating the release of the free DLC for the insanely popular and enjoyable zombie-shooter Left 4 Dead. The DLC, entitled "Left 4 Dead Survival Pack," includes versus mode versions of the Dead Air and Death Toll campaigns, (which should have been in included in the game to begin with), and a new game mode called 'survival.' Survival will pit a team of survivors against increasingly large and frequent waves of infected with the only goal being to last as long as possible across 12 specialized maps. If you've ever played Horde Mode in Gears of War 2, you know the setup.

The pack runs at about 100Mb and as was mentioned before it is free of charge. If you own L4D on Xbox 360, it's already available for you to download and if you own it on PC, it should be up available sometime later today.