Set in the immediate aftermath of the zombie apocalypse, L4D's survival co-op mode lets you blast a path through the infected in four unique “movies,” guiding your survivors across the rooftops of an abandoned metropolis, through rural ghost towns and pitch-black forests in your quest to escape a devastated Ground Zero crawling with infected enemies. Each "movie" is comprised of five large maps, and can be played by one to four human players, with an emphasis on team-based strategy and objectives.
New technology dubbed "the AI Director" is used to generate a unique gameplay experience every time you play. The Director tailors the frequency and ferocity of the zombie attacks to your performance, putting you in the middle of a fast-paced, but not overwhelming, Hollywood horror movie.
- Addictive single player, co-op, and multiplayer action gameplay from the makers of Counter-Strike and Half-Life
- Versus Mode lets you compete four-on-four with friends, playing as a human trying to get rescued, or as a zombie boss monster that will stop at nothing to destroy them.
- See how long you and your friends can hold out against the infected horde in the new Survival Mode
- An advanced AI director dynamically creates intense and unique experiences every time the game is played
- 20 maps, 10 weapons and unlimited possibilities in four sprawling "movies"
- Matchmaking, stats, rankings, and awards system drive collaborative play
- Designer's Commentary allows gamers to go "behind the scenes" of the game
- Powered by Source and Steam
- CPU: Pentium 4 3.0GHz
- GPU: 128 MB, Shader model 2.0, ATI 9600, NVidia 6600
- RAM: 1 GB
- HDD: 7.5 GB
- OS: Windows Vista