Left 4 Dead was 2008's Multiplayer Game of the Year, and the year's best-selling new game property for the PC, Left 4 Dead (L4D). Left 4 Dead: Critic's Choice Edition is a new L4D title that offers all the content of the original, plus all the content coming in the "L4D Survival Pack". Left 4 Dead is a survival action game from Valve that blends the social entertainment experience of multiplayer games such as Counter-Strike and Team Fortress with the dramatic, narrative experience made popular in single player action game classics such as the Half-Life series of games. Set in the immediate aftermath of the long-awaited zombie apocalypse, L4D's single player and co-op game modes are played out across four sprawling "Movies" set in a variety of urban and rural environments. Each "Movie" has an over-riding team objective, is comprised of five large maps, and may be played by 1 to 4 human players. The Left 4 Dead Survival Pack is a collection of new content for 2008's Multiplayer Game of the Year. Headlining the pack is the new 1 to 4 person game mode, Survival, that challenges players and teams to "survive" unremitting swarms of zombies on over 10 maps. Rounds are scored by length of survival, and times will be uploaded to leader boards. Also included in the Survival Pack are two additional Versus campaigns. Each campaign features 5 maps for additional play of the four-on-four multiplayer game that allows players to compete as Boss zombies Versus the human Survivors. Survival Mode - 1 to 4 person quick match play. Advanced artificial intelligence drives both friendly and unfriendly creatures to dynamically create intense single-player, co-op, and multiplayer experiences every time the game is played. Match making, stats, rankings, and awards system drive collaborative play Designer's Commentary mode allows gamers to go behind the scenes of the game. Powered by Source.