electric_challenge (Stage 7: Off the Map)
Underrated games, huh? I think I'm gonna have to talk about
Rhythm Thief and the Emperor's Treasure here.
Rhythm Thief was released as a rhythm based 3DS game in which you play as a French art thief named Raphael. Some of the minigames feature other characters, like Marie, or Raphael's dog Fondue, but the main character throughout the game is Raphael/Phantom R.
From what I understand, the game never really got anywhere near as popular as Sega's other games, and it does get flak over things like the English voice acting and certain minigames (Read: the minigames that use the 3DS motion controls, those ones are generally kind of awkward at best), but it's still very fun to play.
...And I'll also throw in some support for
Fossil Fighters. It was a Pokemon type game with dinosaurs made for the DS where you have to dig up and revive dinos and then fight them, and it was pretty fun on my playthrough. I think I even have some old fanart for it kicking around somewhere! I'll edit this if I find the fanart.