Valve Corporation releases the cooperative first-person shooter game Left 4 Dead.
Left 4 Dead becomes available on the Xbox 360 gaming console, expanding its player base.
Valve supports modding and custom campaigns, leading to a robust community around Left 4 Dead.
The four survivors meet in a pharmacy in Savannah, Georgia, and work together to escape the city and find rescue.
Survivors navigate through the infected-infested streets to reach a nearby military evacuation point, hoping for extraction.
The survivors escape the city by helicopter but realize the threat is far from over as the infection continues to spread uncontrollably.
