Others say...

"Nightmares"
This game doesn't have that much to it and doesn't have many weapons, I'm not a gamer really and I beat it in 9 hours. That being said, it gave me nightmares the A.I. is insane nothing is in the same place twice, even the good stuff, and I was nervous playing the game trying to avoid death even though it wasn't that easy to die. I never got a change to play online but the actual game's A.I. seemed real enough to be just as good.

"Simply an amazing game!"
The team based gameplay really sets this game apart. Your AI control squad mates are needed to make it through each level and the game forces you to help one another. It all comes together magically to make this game special instead of annoying.

"Awesome game"
okay, so this game is about 4 survivors ina zombie apocalypse... i love the idea... the game was deffinitely based off of online/multiplayer gameplay and replayability. there are on 4 stages, and 5 chapters in each and all of which are unlocked from the get go... i have plaeyed all of the above numerous times and ive only had the game for like 6 days, now dont get me wrong, i dont play video games 24/7, but this games deffinitely sat me on my couch more than i normally am, my girlfriend wasn't real pleased by this (haha). i have played campaign mode on LIVE once w/ my cousin before i bought the game (i dont have LIVE for myself yet) and that was a mind blowing experience. i will admit, though, the game gets a little repetative, each stage is the same idea, just different settings. 'run through the chapter, kill zombies, get to the safehouse, run through the next chapter, kill more zombies and get to the safehouse' at the end of each level, you and your 4 man team must hold out against a horde of zombies, a tank, a horde of zombies, another tank, and another horde of zombies as evac arrives. this gets very difficult as u go high up on the difficulty settings, or if u play w/ people that cant listen or strategize. there are only 6 guns (pistol(s) shotty, uzi, auto-shotty, assult rifle, and sniper rifle) and 2 grenades (pipe bomb and molotov) to choose from and 6 types of zombies (standard, boomer, smoker, hunter, tank, and witch), but the game is randomized, so you will never know exactly where anything is until you come across it... overall i give it a 9/10

"A Great Zombie Shooter"
Left 4 Dead was a game I had pre-ordered because of my love of zombie horror. My money was well spent.

Left 4 Dead has an entertaining single player mode that thankfully splits itself up into four different campaigns with each part containing a different setting (woods, city, etc.) and short length. You can also choose to play these campaigns with friends over Xbox Live or split-screen.

There really isn't a story to get immersed into during the game play: you kill zombies with the last remaining humans in the area. What the game lacks in story telling, however, it makes up in its fantastic AI. Even when playing the same campaign over again your enemies will come from different directions, ammo and health will be located in different areas, and "special" zombies won't be in the same place twice. This makes for great tactical fun.

Co-op and multiplayer are heavily stressed in this game. Even when in single player mode you'll need to rely on your AI partners for help. Luckily, the AI allies are quite well done and will actually help you in the game.

The online multiplayer game variant is a ton of fun. However, I hope Valve will release map packs because the constant enviorment of the campaign gets old after a while.

This game has a moderate replay value as long as you have a few buddies online to fool around with. If you don't have access to Live, however, then you might be done with this game after a while of play.

Overall, it's a great game and I recommend it.

"warning: addictive"
Do NOT GET THIS GAME. IT IS HIGHLY ADDICTIVE. MOTHERS DO NOT LET YOUR KIDS GET THIS GAME. THEIR BRAINS WILL TURN TO MUSH. WIVES DO NOT LET YOUR HUSBANDS GET THIS GAME. YOU WILL NEVER SEE THEM AGAIN. DO NOT START PLAYING, YOU WILL NOT STOP. THE GAME DESCRIPTION IS A LIE. YOU DO NOT GET INFECTED IF YOU LOSE, YOU GET INFECTED IF YOU START PLAYING.