Yes, and there are pretty old worlds, from the time of MUDs and with similar public.

EDIT: There's such a Russian fantasy writer as Alexey Pekhov, with worlds kinda based in notable enough plagiarism of Thief games universe, VtM and Sapkowski, but his things are a subject of nostalgy for me ; so - there are still running NWN worlds based on them, and their peak of popularity was like 15 years ago in a completely different world (meaning IRL).