Nintendo took their eyes off of the casual base it attracted with DS/Wii and now they are well catered too, in fact, overwhelmingly catered too, on iOS/Android. It's completely illogical now to buy a 3DS for Brain Age when dozens of similar games are cheap/free on the phone you already own.
This is a big problem for Nintendo who has long gotten rich off of easy to make games with long selling appeal. But all easy to make games can now be had for next to nothing on phone/tablets. Consoles both home/mobile are only worthwhile for deep, expensive and expansive games that phone/tablets can't provide. Find for 3D Mario/Zelda/Metroid but most of Nintendo's franchises would seem more at home on a tablet than a console nowadays. $350 to play NSMBU? Absurd. It'd be a $15 game (at most!!!) on tablets/phones. Brain Age? $5 - max. People's perception of the value of these games has alterred and Brain Age is a prime example.







