My older brother got this game for Christmas, and, naturally, I wanted to watch him play it (but obviously I also would play sometimes). While it is a great game, it is definitely not for anyone under 10 or 11, and maybe for some mature tweens. All of the female characters that play a major part in the story (Harley Quinn, Catwoman, Poison Ivy, Talia al Ghul) are rather suggestively dressed and the inmates of Arkham City sometimes comment on this. I believe there is also one mention of pornography (While discussing reading, one inmate tells another that it doesn't qualify as literature). Inmates and villains swear, but it is pretty mild (b*tch, a*s, d*mn, h*ll, sh*t) and Batman only swears once (d*mn). The violence is pretty heavy, as you can engage in fights randomly in Arkham City and throughout the storyline, you will silently attempt to take out a roomful of armed thugs multiple times. If you have the ability to play as Catwoman in story episodes (I believe that's only in the DLC), you actually kill TYGER guards (by choking them). Apparently Batman doesn't kill, but you knock a whole lot of people unconscious (most of whom would die without immediate medical care and Batman just leaves them lying there). One villain stabs himself and another character with a sword. This game can also be extremely difficult to play at times. There are a lot of different gadgets that you have to memorize the proper buttons to use quickfire, you have to remember what buttons to press to do different takedowns, etc. This also prevents the game from being enjoyed by younger players. I believe I just about covered everything. It is my favorite video game I have ever played, and it is amazing, but definitely not for anyone under tween.