Ide Yosuke no Mahjong Kyoushitsu GB

Ide Yosuke no Mahjong Kyoushitsu GB is another mahjong game by Athena, except this one teaches you how to play Mahjong with goofy-looking characters and great music.

Of course, that doesn't really mean much if you can't read Japanese...

Planned Super Game Boy Support
Likely Super Game Boy support was scrapped very early on as programming to load them does not exist (unlike Yakouchuu GB), and they are probably remnants of Athena's Pro Mahjong Kiwame GB II Super Game Boy packet listing. Located at is the first Super Game Boy packet listing.

Located at is an additional Super Game Boy packet listing.