I only played the Pen and Paper Game once but I am a Fan on the world and not only had fun reading the Novels but also the Lexicon.
It's basically what I am looking for in a good fantasy world: A world which offers everything but which is consistent and completely logical in itself. In addition they are not shying away to write about socially critical topics like discrimination, racism or homosexuality.
The first video already showed that you can basically find an equivalent to every people in the game, to every landscape and so on, so it's also not too hard to immerse with the right background. Wether you want to play an "Asian" which would be an inhabitant of Maraskan, a "Viking", which would be a inhabitant of the Northwest (Thorwal, Realms of Arkania Players will remember), or a "Native African" which would be a "Moha", living on the islands in the very south.
I think these videos are a good way to open up the World for Non-Germans, which was a big problem with the Drakensang Games from what I know as hardly anyone outside of Germany had a relation to them. (Forget the latest game, which is not Dark Eye anymore).
An interactive bi-lingual page with a map however might have been even a better choice.