Left 4 Dead 2 is a game developed and published by Valve in 2009. Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008. 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.
The system requirements are lightweight; almost any new laptops will work for playing L4D2.
Every new laptop meets the RAM requirement of 2gb.
Also, note that at least 13gb of disk space is necessary, which has to be noted if you install many games.