@Felthry Good 3DS games?
Wario Ware Gold. Whether you've ever tried the Wario Ware series or not, this is the one to look into.
Fantasy Life. It's a very cute RPG with a life sim aspect. You can be a warrior or a magician, or you can just be a cook or a tree cutter. Combat is 100% optional.
Miitopia. Another RPG, this one lets you use Miis to create all of the characters in the game, from heroes to villains to NPCs. Has a really cool relationship system.
@Felthry It's not like, amazing, but it's pretty good if you wanted something with the general feel of classic PSO, but with cleaner/more updated movement and controls and general capabilities. It's not like the PSU engine if you're familiar with that.