Summary: Left for Dead is a great game bringing Zombie survival to its best in the realm of Video Game. L4D 2 follows the same logic with new maps (one map is from the original version), new special zombies and slightly better graphics. Any serious gamer should either the first version, this one or both.
Summary: the game is very fun. I kind of got addicted to it. the first time I played it I got a little scared of the "Special Infected zombies". Now I'm just having fun killing them. there has been a lot of updates. you'll need to play the game or watch videos on the internet to see how it is.