This Wired article discusses Sociolotron, an online roleplaying game (currently in beta) with mechanics that allow sex, bondage, even rape. The article talks a lot about the experience of players who are “raped” in game. It sounds to me like the engine is of broader interest, if only because it brings some of the social freedoms of ancient MUDs into the MMORPG world of today. Critically missing from the Wired article: screen shots.

Thanks to Daze for the link.