Fire Emblem Awakening (if you haven't played it already) FE Fates Special edition (it has 3 games in one, but its dubbed and has japanese voices, hope you don't mind subtitles) So those are the main FE games (for better graphics) But you can get a gba firm (Game Boy Advanced)-

RE: Revelations!

And if you get the old FE games on there, lemme say this, those games are some of the best games Period. (in my opinion) You can also get, Monster Hunter (any of them are good) and brb I gotta check my game library.

I will say take absolutely mario kart with ctgp7 (mod) kirby- planet robobot and tomodachi life. for something rpg take final fantasy explorers. If you like to draw things, New art academy.

Legend of Legacy, HomeTown Story, Persona (whatever persona games are for 3ds are usually good) and Ika-Chan (its a nds game on Universal Updater, It's a pretty sweet game but also kind of short)

And like the dude above me was talking about Final Fantasy has an amazing story (if you have a new 3ds you can run the PS versions if you have time, but I'd just stick, with the gba ones) That's all I have for now (I would've mentioned others but I don't remember the names)

Most of the ones I said were rpg's but if you want a racing game there's Asphalt 3D (and any Need for speed game on gba) if you want picross (there's like 10 million of em everywhere) if you want a Mii game there's Miitopia, Tomadachi Life, Miitomo (I think that's a game)

If you want simulation, there's sub diving wars, To sum it up, Get a FE game or Persona/Legend of legacy.

Smash 4 and NEW Super Mario Bros. 2

You guys are great, thanks for your input. Train ride was very enjoyable, thank you. :)