I am starting a hentai theme campaign using the Goodman Games RPG (Dungeon Crawl Classics). www.goodmangames.com/dungeoncrawlclassic...
I am going to make my own module for this game, and will attempt to make it downloadable.
First, the character creation will have to be changed. It will of course have a sexual theme to it. Amongst the options there will be the more popular fetishes, among some lesser known ones just for fun.
The difficulty with these types of games is actually playing them. Yeah, you can have the book of erotic fantasy, but who will play with you? Noone wants to sit around a table listening to some awkward nerd talk about his fantasies. Online is the best place to actually play a sexually themed game.
The story that I think I will go with will be set on a fast moving train (railroading the players) the train will be en route to an all female school. Everything is ok but.. Someone is murdered! Then strange stuff happens all over the train while the investigation goes on.
Batterpillar
