Mahjong Gakuen - Touma Soushirou Toujou
A mahjongg game that seems to be trying to be adultish as furtively as possible. The actual strip game content is sandwiched between matches against either cheeky little girls or thuggish Japanese men you beat up, and pressing Select brings up a scene of a boat and an island, probably meant to deter Japanese parents from catching their kids playing it. Even then, the nudity is minimal. Another option seems to allow you to play a mahjongg game with a story. The game itself can be a little challenging, but if you're looking for a good strip mahjongg game, look elsewhere.