Some of the worst Nintendo mobile game ideas I've ever seen.

[MatrosRx]

As for bad games for mobile: I think anything that relies too heavy on you moving a character around a complex field like adventure, shooter or platform titles, they just don't work with touch controls.

Puzzle, strategy and minigames are perfect for the mobile market. I think Tomodachi Life would be huge on the mobile scene, especially in Japan, it's quirky, relies on the touch screen for input and played in short doses it just seems meant for mobile devices.