Left 4 Dead 2

Four survivors, Coach, Ellis, Nick, and Rochelle, find themselves abandoned on a hotel rooftop in Savannah, Georgia after rescue helicopters leave without them. In the aftermath of a pandemic known as the "Green Flu" that has turned the population into aggressive zombie-like creatures, the group must fight their way south toward New Orleans, rumored to be the last standing city in America.

Their journey takes them through a shopping mall, an abandoned amusement park, swamplands, and eventually the streets of New Orleans itself, where the military is conducting a final evacuation. Along the way, they rely on safe houses, improvised weapons, and each other to survive against increasingly dangerous hordes of the Infected.

Left 4 Dead 2 is a cooperative first-person shooter video game, the sequel to Valve Corporation's Left 4 Dead. The Game builds upon cooperatively focused gameplay and Valve's proprietary Source engine, the same game engine used in the original Left 4 Dead. Set during the aftermath of an apocalyptic pandemic, Left 4 Dead 2 focuses on four new Survivors, fighting against hordes of the Infected, who develop severe psychosis and exhibit zombie-like tendencies. The Survivors must fight their way through five campaigns, interspersed with safe houses that act as checkpoints, with the goal of escape at each campaign's finale.