If any of you have heard of DMM (Japanese porn/gaming giants), they appear to have partnered with a North American company to bring their adult hentai games to English audiences.
Nutaku.net | Adult Hentai Games, MMO, RPG and Card Games
You can check out an adult japanese hentai version of clash of clans
here.
they also have a hentai/japanese version of Yu-gi-oh,
here.
I just thought this was pretty interesting.