While still retaining the same focus on four-player co-op as in the original game, Left 4 Dead 2 uses an updated version of the ' A.I.
The sequel is set in the Southern United States and centers around a new team of four Survivors - Coach, Nick, Ellis and Rochelle - who are forced to work together to fight through the hordes of Infected and reach safe haven. Like its 2008 predecessor, the game is set during the aftermath of a global pandemic that rapidly transforms its victims into mindless, highly aggressive zombie-like creatures known simply as 'the Infected'.
Left 4 Dead 2 is a first-person shooter developed and published by Valve for PC and Xbox 360 on November 17, 2009.
