It Would Be like Mario Kart, Only with other nintendo Characters.
Starters:
Mario
Link
Red
Tom Nook
Kirby
Wario
Pit
R.O.B.
Mii
DK
Unlockables:
Zelda
Luigi
Yoshi
Diddy Kong
Mr. Resetti
King Dedede
Blue
Peach
Bowser
Meta Knight
Kapp'n
Pikachu
Nintendog