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
Windows
Minimum:
Supported OS: Windows® 7 32/64-bit / Vista 32/64 / XP
Processor: Pentium 4 3.0GHz
Memory: 1 GB
Graphics: 128 MB, Shader model 2.0, ATI 9600, NVidia 6600 or better
Hard Drive: At least 7.5 GB of free space
Sound Card: DirectX 9.0c compatible sound card
Recommended:
Supported OS: Windows® 7 32/64-bit / Vista 32/64 / XP
Processor: Intel core 2 duo 2.4GHz
Memory: 1 GB
Graphics: Shader model 3.0, NVidia 7600, ATI X1600 or better
Mac OS X
Minimum:
OS: MacOS X 10.6.4 or higher (Snow Leopard Graphics Update required)
Processor: Dual core Intel processor, 2GHz or better
Video Card: ATI Radeon 2400 or higher / NVIDIA 8600M or higher / Intel HD Graphics 3000
Not supported: OS X 10.5.x, ATI X1600 or X1900 graphics, NVIDIA GeForce 7 graphics or Intel graphics less than Intel HD 3000.