Originally Posted by JDR13 
Interesting… The message states that their other project is also a "fully open-world game".
So it would seem they're going open-world with The Witcher now as well.
Or that they don't have the usual definition of "fully open-world game" as most people do. Did they use it for the Witcher 2?
The Cyberpunk 2077 game is made with the RedEngine too, maybe it's simpler to make it support open-world and use it for the next Witcher game than try to maintain two different code base for world loading in it.