2D: Sonic 3 & Knuckles tied with Sonic CD. 2:nd place: Super Mario World tied with JazzJackRabbit 2
3D: Super Mario 64
Current gen: New Super Mario Bros Wii
Honorary mentions: Gex, Sonic 1, 2, X-treme (WHYYYY????? IT WOULD HAVE PREVENTED THE ADVENTURE FIASCOS FROM EVER HAPPENING!!!!!!! T_T), NES Marios.
I LOVE ICELAND!