The Legend of Zelda Ocarina of Time 3D Super Mario 3D Land Mario Kart 7 Starfox 64 3D Kid Icarus Uprising Resident Evil Revelations Theatrhythm Final Fantasy Fire Emblem Awakening Luigi's Mansion Dark Moon Animal Crossing New Leaf Shin Megami Tensei 4
Those are the must have games I'd say.
Agree with everything except Theatrythm, but that's just me. Really, while there are a number of games for the system, there are very few actual 3DS games that are really top quality and the rest is essentially up for download (VC and Download-original titles)
At this point, only one word signifies me:..yes. 3DS: 5370-0900-3336/Wii-U: NewZen41