When Metroid came out, my father complained that Nintendo had missed a great opportunity for making games educational. He suggested that instead of the apparently random mish-mash of numbers and letters that made up the passwords for the game, they could have set it up so every digit in a long-division problem would need to be entered.
Fast-forward fifteen years, and the Nintendo DS has a brain training “game“. As near as I can tell, it’s a set of daily exercises that are meant to make sure you use all parts of the gray matter. The story on IGN does a pretty good job of explaining it.
And here’s the weird thing: it looks kinda fun.