to my knowledge, Germany doesn't ban violent Games. They are put on the so called "Index".
The game can still be Sold, but it can not be advertised, or even put on Display.
so, customers have to specifically ask for the game, which is not really good for the sales numbers.
Most developers tend to "censor" their games for Germany, by changing or omitting content. i remember half life having Robot-Soldiers instead of real ones :D
“It appeared that there had even been demonstrations to thank Big Brother for raising the chocolate ration to twenty grams a week. And only yesterday, he reflected, it had been announced that the ration was to be reduced to twenty grams a week. Was it possible that they could swallow that, after only twenty-four hours? Yes, they swallowed it.”
- George Orwell, ‘1984’







