This game is based on a book, and is very story intensive. This is a great thing for me but I know many people just want to play and don't care about the story so understand that before buying. The violence is intense, but not graphic. Language is bad, but most pop songs have worse. There are MANY bugs. Sometimes standing right in front of someone won't alert them to your presence while at others you can be 100% hidden and they will see you no problem. Also sometime NPC do not move and you have to restart the entire chapter to move on. Throwing knife kills are one hit kill, as long as they don't see you, always. Even on bosses. But now that the problems out of the way lets talk positive. The game makes fights feel quick and exciting. Guns feel like they have power and the graphics are quite literally the best of all time (from a technical stand point). The story is awesome and it feels like an action movie, and your the main star. It is not a short game unlike many others (cough call of duty cough) and it feels like time was spent on it. It's almost perfect but the glitches ruin it. Having to play up to 40 minutes of game play for a second time is annoying and discouraging. One thing I can't stress enough is that make sure your PC (if you play on Xbox or PS3 don't worry) is up to the task. It is the most intensive game to date and some simple online test can tell you if your PC can in fact play it. In short it is an amazing game held down by bug after bug. I think 14 year olds can handle it fine and I would say iffy for 13.