I was wondering why you didn't have alot of the other mario titles listed, like:
Mario Kart
Mario Kart 64
Mario Kart Super Circut
Mario Party
Mario Party 2
Mario Party 3
Mario Party 4
Mario Party 5
Mario vs Donkey Kong
Hotel Mario
Mario is Missing
Super Mario World 2: Yoshis Island
Dr. Mario
Mario & Luigi: Superstar Saga
Mario Time Machine
Mario Tennis
Mario Tennis 64
Mario Paint
Mario Artist (various)
Mario: The Lost Levels
Mario Clash
Mario Golf
Mario Golf: Advance Tour
Mario Golf: Toadstool Tour
etc.
But I guess their is some sort of limit on how many choices can be available. Anyway, my vote goes to Super Mario World.