deleted_user: I'm not from Germany, but a little research says otherwise:
http://en.wikipedia.org/wiki/List_of_banned_video_games#Germany PaterAlf:
§ 130 and § 131 make it to a criminal offense to do following with corresponding scriptures:
1. distributing / selling
2. issuing in public, demonstrating or otherwise making available
3. leaving it to a person under the age of 18
4. producing, buying, delivering, storing, offering, announcing, praising, importing or exporting to use them within the meaning of the letters 1 to 3.
This means, that the import or purchase and the possession for personal use are still legal for persons over 18 years.
PaterAlf: It's all in the article you found. It's completely legal for adults to buy this games and import them to Germany for personal use.
Correct, but it's illegal for the seller to sell it to Germans in Germany. At-least that is my understanding. So no the consumer is fine if they manage to get, but GOG as the seller is not.