Woah woah woah woah. 18 and over? REALLY?! The game isn't that bad, there isn't any blood, unless you play crucible then you only kill aliens, no swearing in the dialog, (yeah others swear but maybe kids shouldn't play with random people they don't know) and the only scary race is the hive. All of those points warrant the 13+ rating. But 18+? What's next, Super Mario Bros getting a 13+ rating?