Left 4 Dead 2 (2009)
Left 4 Dead 2 is a highly anticipated sequel to the award-winning Left 4 Dead. It is a co-operative action horror FPS set in the zombie apocalypse, taking players on a journey through five expansive campaigns across cities, swamps and cemeteries of the Deep South from Savannah to New Orleans. Players take one of four new survivors armed with an array of classic and upgraded weapons including firearms and melee weapons such as chainsaws, axes and frying pans for taking out infected enemies. There are also three new Special Infected enemies along with five uncommon common infected such as Mudmen. AI Director 2.0 adds further challenge by changing weather conditions, pathways taken, enemy population and sound effects based on player performance for a unique experience each time the game is played.