麻雀でPON!

Mahjong de Pon! is a strip mahjong game of the one-on-one variety. The player assumes the role of a male mahjong specialist who competes in an elite club against three young women. It is necessary to defeat them one by one, in a linear fashion. As soon as the opponent runs out of money (which happens immediately if the player manages to get the highest mahjong combination in a round) she removes an item of her clothing. The game has three difficulty levels and also includes a training mode that explains mahjong rules in detail and allows the player to practice with the guidance of a teacher.

[From MobyGames]