If you ever wanted to play some sort of strip game with the girls of The Melancholy of Haruhi Suzumiya, here's your chance. Admittedly, your game of choice would probably have been Poker (or Snap), not Mahjong, but "When in Nihon, do as the Nihonjin do", as the old saying doesn't quite go.
It plays like a Visual Novel up until the point that the mahjong kicks off. It's all in Japanese so unless you can read those crazy moonrunes, it should be of interest to know that CTRL skips through the text quickly (though it will all still have to appear; you can't just jump to the strip mahjong).
I was reminded of this game because I've got back into Haruhi recently due to the new season and I've also got into mahjong recently, thanks to Akagi and Saki (I recommend Akagi wholeheartedly. Saki pales in comparison, but then Akagi is aimed at the GAR crowd whereas Saki is very moe, and is worth watching for it's moe-ness at least).
Some preview images.
Yes, you do eventually get to go a little beyond stripping. And there are some guest appearances too.
Download the game
Download the patch
If you don't know how to play mahjong but would like to learn, check out
this site and practice on
this one-player flash version of the game. When you feel more confident, why not head onto
Tenhou, an online mahjong site where you can play with other human players. You'll need
this English guide to Tenhou, most likely.
Finally, if it's all too much work for you, here's the
CG collection.
Bonus!
Quick translations of various menus:
Here is a translation of the main menu.
The "???" is there because there are some tiles that haven't been flipped yet. I bet that when you complete Story Mode, something appears here. Almost certainly it'll be a mode where you jump straight into playing mahjong.
And a translation of the options screen.
And of the File menu:
[color=red]
Note: If/when you're defeated, the top option is Continue, the bottom option is Quit.[/color]