Check out Mario and Luigi series (Dream Team and Paper Jam. The former is especially good imo), and Luigi's Mansion: Dark Moon (One of the best games in early 3DS era, and still is very, very worth your pick). You also can't go wrong with Super Mario 3D Land. Sonic Lost World is also quite decent.
Metal Gear Solid 3D is also a great game if you don't mind the slightly awkward controls (But you'll get used to it, don't worry.)