4.5 Watch out for the Incredible Purple Hulk (you€ll see!) theWub | 22/03/2011 | See all theWub's reviews (135) Play L4D at your peril! This game is completely addictive -- at least it is for me. Shooting zombies is just so much fun, especially when it's made possible by such a well-crafted game. The premise is very simple: you and three fellow survivors have to make your way from one safe house to another until you are finally rescued. Along the way you have to fight off hordes of slavering zombies. In single player mode the AI is pretty good, although your teammates don't always behave as you might wish them to during the incredibly hectic campaign finales. There are 4 campaigns with 5 maps to each one. Replay value is good due to the fact that the AI changes the zombie attacks and spawn points with each play, so you never know where the horde is going to come flooding from or where the bosses are lurking. When you get bored with the maps supplied there are loads of 3rd party maps and campaigns available on the web. On top of all this you can even play as one the various types of zombies (on a random basis). Personally I find this less satisfying, but it is worth a go just to get the other perspective. This is a simple but truly great game. L4D2 here I come!