Before anyone else comes to this thread suggesting you the usual suspects (Pokemon Y/X, Fire Emblem: Awakening, Animal Crossing: A New Leaf, etc, etc, yada, yada), i'm gonna suggest you the single best RPG in the Mario franchise since Super Mario RPG:
Mario&Luigi: Dream Team Bros. If you like RPGs and Mario, you'll love the beejebus out of this game.
Congrats on your purchase as well!
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"
