I played this hentai game awhile ago, and I'm trying to remember the name of it. It had an art style similar to sinensian's. It was based around one character, this flat chested heroine invading your dungeon or something, and you would have to use a certain order of traps to fuck her at the end. And some of the orders would give you different results. Like one order would give her big tits, or a dick and there some others too.