There has been a trend among free sex game developers to create and adult RPGs,in which the authrots can add new characters and sex animations to each new part. This game follows the story of Lust, a demon from the second circle of hell. It features lots of explicit sexual content, violent turn based combat, various realms that Lust will be able to explore and conquer, involving characters and much more.
http://www.hentai-gamer.com/index.php?page=game&g=ef2f1abd00ebaea4bf5f5544fa29bf77