I was more of an NDS kid because I was already older by the time the 3DS came out and I loved obviously Nintendogs and Animal Crossing, but also Another Code, Harvest Moon and Rune Factory, the Mario RPG games, and of course my absolute favorite Lost in Blue. That game was the first real survival game to ever exist and I remember spending hours just taking care of my bars over actually progressing the story lol (also because I figured the story was going in a sci-fi direction I didn't care for and that game was seriously hard af).

Of course that's just the games I grew up with, later on I was able to play Ghost Trick, Professor Layton, Phoenix Wright and the two Zelda games still on the NDS. Also love Theresia and touch Detective, which I think count as hidden gems. I especially recommend Theresia. But like I said I played those years later so I don't count them with the bulk of what I played as an actual kid when those games came out.