german usk and bpsj are crap.
Usk give 12+ for sex scenes and 18+ if there are any firearms with blood involved.
Any game with graphics better than battlefield 2 and arms is 18+
and any game where you see a person getting killed to precisely or it is a bad political theme gets zensored, and the uncut version isn't allowed to be sold.
you can't even activate uncut cod games in germany.
and there aren't any nazi emblems allowed on a film/game.
German inglorious basdards is 18+, but it's cover is "cut" ^^
and if there are only older arms, no firearms it gets 16+, no matter how brutal
€dit: metroid 3 is 16+ in germany