I have two sons. One is almost 13, and the other is 11. Now, the thing is, both of them can play this game. I bought it for them. I see nothing wrong with either of them. They know that the game is fictional, and none of them have scary nightmares or anything. I even play with them sometimes. Left 4 Dead is just a teamwork game. It stresses on the fact that if you play just for yourself you won't survive. This is different from many shooters in the fact that you aren't shooting real people, but zombies. Although this may seem pointless, it is a game just for fun. This is also another reason I bought it for my kids. So this is what I think. If your kid is able to handle any T or M shooter, and you've bought one of them for the kid, buy this game. It's a GREAT game, and it is good, I believe, for children 11 and up. Of course, if your kid walks around the house as if he has a gun, and makes references to video games all the time, you don't want to buy him this game. Actually, you don't want to buy him any shooting games, because that can ruin him. But if your son/daughter is normal and knows that the game is fictional, buy it. It's not even a scary game, at all. Even for my kids. When a zombie comes right to their face, they don't flinch at all. And these are kids who were afraid of Scooby-Doo Vampire movies at age 8. Trust me, get this for your kids. They'll love you for it.