Iirc, the incest is just the mother, the sister and the aunt. Then there's the orc, the drow, lady death, sandy, the dwarf there (but most likely will never be finished), a.. naiad? Though even that I don't think it will ever be completed, so consider that as a "bonus" and not a full-fledged route, Jenny (female version of Jeremy) which even this I don't think will ever be completed, and the same fate will be even for Rosaline.
So I'd argue about "mostly incest" (but if you're talking "scene-wise", I guess yeah, mostly incest). And about the other.. what do you mean?