Mario & Luigi: Bowser’s Inside Story+Bowser Jr’s Journey, a remake of 2009s Mario & Luigi: Bowser’s Inside Story for the Nintendo DS, was released in January, and a port of the 2016s Wii U title, Kirby’s Epic Yarn, will be coming on March 8, 2019, as well as Persona Q 2: New Cinema Labyrinth coming in June. If you look at any of the 2019 game release date lists on big sites, you’ll likely see these titles. One Nintendo 3DS title you might not see on this release list, however, is Yo-Kai Watch 3.
The top 10 rarest 3DS games of all time are probably ones you both did and didn't expect. Especially if you had these games!
I have Fire Emblem Fates LE, the European one. Not sure if it's as valuable as the US version, but it certainly was in high demand.
Its not often I actually have games on the 'most expensive list' but I do own Rhythm Thief and Layton vs. Ace Attorney. I believe both of them are sealed as well.
GamesRadar - "If you've caught them all, why not catch these games like Pokemon to scratch your trainer itch."
Adam from GamesReviews takes a look at Yo-Kai Watch 3 on New Nintendo 3DS.