What is the Inverted Dungeon and (again) why is it linked into the CVRPG menu?
The Inverted Dungeon (ICVD) was the first Castlevania parody project I worked on (and, from-time to time, I still work on it). Both CVRPG and DSWC are considered (in my head) to be ICVD projects. The elements of shared reality that CVRPG and DSWC contain carry over to ICVD, usually. Some characters, like Akmodan II, have differing bios and information on ICVD than they do in CVRPG and DSWC (although, in the case of the mummy Akmodan II, it could be that the Mummy in CVRPG is a different mummy than Akmodan II, thus explaining that error away). If you’re looking for information on the Castlevania series, ICVD is a good start. Bear in mind, however, that most everything on there is written to be amusing, not factual.
