Interactive fiction has https://ifdb.org/.
Gamebooks ("CYOA" to outsiders) have https://gamebooks.org/.
I think there is some community around branching browser text stories like (mostly) Twine games that have their own database somewhere?
And then there is always some overlap and discussions around what games to allow where, with each community gatekeeping to some degree what games are allowed in their database or not.
So, for example, I never heard about VNDB and never really crossed paths with VN players online, even if I have been around communities for IF and gamebooks since last century and the similarities are obvious.