64GB?
You will have enough time to spend on on this list:
Bravely Default, Bravely Second, FE: Awaking, FE: Fates (i use several patches like the gay patch :3) Persona Q, Stella Glow, Legend of Legacy, Etrian Odyssey IV, Etrian Odyssey Untold 1 / 2, Majora's Mask, a Link between Worlds, Hyrule...