Good Commute Games?

I've been taking the bus to and from class a few times a week and am looking for a 3ds (or ds or gba/virtual console) game to play on my ~40 minute commute each way. Ideally I'm looking for something I can play for 30-45 mins at a time and doesn't have a super long playthrough overall.

Games I enjoy:

- ACNL

- Tomodachi Life

- Rune Factory 4!!!

- Fire Emblem Awakening

- Picross games

- Style Savvy games

Does anybody have a JRPG that is a shorter playthrough (ideally 50hrs or less) that I can play in short bursts? Also okay with puzzle games or cozy games! Or some of the classics! I've heard Rune Factory 3 is a shorter entry in the series, so I'm playing that, but I'd like a bit of variety too :) Thanks!