The 2DS actually looks quite portable to me...
As others have said, consider Fire Emblem: Awakening...
If you can appreciate a hardcore platformer, I would also recommend Donkey Kong Country Returns 3D...
And there's always Animal Crossing...
It might look like a game for kids, but it's basically crack...
And should you give Kid Icarus a shot, allow some time to get used to the controls...
Have a nice day...







