Crayons
Iconoclast
I wouldn't even say the RPG is obscure. It was popular enough to get a video game adaptation in the first place, along with multiple editions and a pro wrestler using the name of one of the vampire clans at pro wrestling's late 90's boom.
Also countless sourcebooks, a number of novel series and a TV show. (The TV show was ... not good. XD)
I would say that it's easier to find an RP based on VtM directly (the tabletop game) than it is to find one based on Bloodlines.