Left 4 Dead 2(for PC)

Down in the bayou of Louisiana, all hell has broken loose in this second entry of the multiplayer zombie-fest. Players assume the role of four new survivors, each with their own personality and new dialog. The game leads them through the southeastern region of the US -- from Savannah, Georgia through the bayou country, and climaxing in New Orleans' French Quarter. This co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns. You'll play as one of four new survivors armed with a wide and devastating array of classic and upgraded weapons. In addition to firearms, youll also get a chance to take out some aggression on infected with a variety of carnage-creating melee weapons, from chainsaws to axes and even the deadly frying pan. You'll be putting these weapons to the test against (or playing as in Versus) three horrific and formidable new Special Infected. You'll also encounter five new "uncommon" common infected, including the terrifying Mudmen. Important Note: This game is not playable through Steam outside India