Oh! I have a 3DS!
Oh man.. I'm always on this thing. Haha. I only have a few games, because my sister lost all mine. I'm super angry. All I have left is Harvest Moon: A Tale of Two Towns, Pokemon X, and Animal Crossing: New Leaf (omg I never stop playing New Leaf)!
Those are probably my favourite games though for it. Super Street Fighter IV was a bit of a disappointment- it looks absolutely stunning, and I LOVE Street Fighter, but instead of actually having to pull off the combos, you can just tap the premade macro buttons on the touch screen like Pokemon. Which just feels really cheap.
Rayman 3D is really good too- it's just Rayman 2: The Great Escape with 3D graphics, but there's so much nostalgia in it for me, since I had it as a kid and it was one of the many games I loved.
Everybody keeps telling me to play Ocarina of Time for the 3DS but I haven't gotten around to it. I have it, but, it's one of the ones my sister lost. :/
If you have any questions about it, I'm like a 3DS guru, lmao. You should add me on it!