Left 4 Dead 1 and 2 were both fun games I played with my classmates back in college. I was in my second year when it got released, and then the 2nd game got released shortly after. It was weird considering most sequels end up being made at least 5 years after the original game, and this one only had a year to work with. And L4D2 had better graphics, gameplay, and balance; so you really didn't have a reason to play the first one other than the story. Still, pretty good for a team game and it's a nice change of pace compared to Counter Strike, where we just wail on each other until the classes start again.