Donkey Kong Country Returns. The DKC franchise is my favorite in gaming and I hadn't been able to play this game yet because I didn't have a Wii anymore by 2010. So I was really excited that it got a 3DS port and man did it not disappoint! I replayed that game at least 10 times before Tropical Freeze came out on the Wii U.
Other than that, I would say Kid Icarus: Uprising. I definitely had to get that attachment though lol