Would say Danganronpa but that's recently increasing in popularity (which is good and bad because I don't want it being ruined by trash fans)
So Fossil Fighters!
I've talked about it before, but Fossil Fighters is a really interesting RPG series that started on the DS. 3 on 3 dinosaur combat.
THREE ON THREE DINOSAUR COMBAT. That alone makes it awesome, but the game play is very simple and easy to learn, while still being super fun. You even get to dig up the fossils so you can use them! The second game, Champions, was just as, if not more fun. Then the third game, Frontier, most likely killed the series as it hasn't had any games since, and I can see why as the game sucked. There were a couple of cool things, but it changed everything and not in a good way. Hopefully a revival comes out on switch.
(edited by JustAMimikip)