I think you're more likely to run into rules printed in English in Germany, but that aside every country has their quirks. It really wasn't that long ago that Germany and France were having a go at Yahoo! over Nazi imagery that was hosted on their services, or for sale on Yahoo! Auctions.

60+ years after the end of the war, it might not be immediately obvious, especially to an American used to 'first amendment rights', that your web page with screenshots from Wolfenstein 3D is possibly illegal.

And that's just an 'oddity' that I, someone who has never even been to Germany, know about.