new super mario bros 2 , Bravely Default, Yoshis new island, mario kart 7 And if you like golf Mario golf world tour is really fun and has good online features with 4 people playing a round at once.
MK7
Pokemon X and Y
Mario And Luigi Dream team
Luigi Mansion Dark Moon
Bravely Default
Mario Tennis Open
Kingdom Hearts Dream drop distance
Fire Emblem Awakening
If you like online play, Fantasy Life that comes out in october looks like it'll have great online features, letting you pretty much play the entire game with a friend
Plus it's Level-5, (The Layton games, Ninokuni) so you know it's gonna be quirky and nice to look at, IN THE VERY LEAST
I hear Yoshi's Island is a really good game. Tomodatchi Life looks like a fun game too, although I hear that it's a game that you either love or you hate.
Mario Kart 7 was good, however there aren't that many people playing it anymore, well at least that's what I found. You might be able to find some other people to play it with, but a lot of people are playing Mario Kart 8 now.
You should check out IGN or other gaming sites that have a top 3DS list--you can get references there, but if you want some now--Pokemon X/Y, Animal Crossing: New Leaf, Fire Emblem: Awakening, Mario Kart 7, Legend of Zelda: Ocarina of Time OR a Link between worlds (though I personally would go with the first as it's a classic)...perhaps Batman: Arkham Origins or Scribblenauts: Unmasked (I've enjoyed those). Also--if you want to wait for other games...I would wait for Super Smash 3DS, and