where's the first part? I want to buy the series ???

And don't tell me REGIONLOCK :(

I don't know if it's completely blocked but i was looking through the game's listing on the PC gaming wiki and saw that it said the game on Steam has a "low violence" version for Germany.

PCGamingWiki

In that case it's REGIONBLOCK (sale in Germany is locked, but redeeming/owning/downloading).

Yes, that's it. An LV-version was and is available on steam. I got it now and patched it with a UCP.
I already owned NV on DVD as an LV-version and played it uncut with the help of an UCP, so the store-block is useless and GOG should've known there is a localized version and should have sold it here. So, THERE LOSS.