If your talking about console, its the snes for me.
The game would be super mario all stars special edition or something, had super mario world with it.
My uncle was a hardcore gamer even today, introduced the super nintendo when i was 8, for my birthday. To tell you the truth, i wouldn't have been a gamer if it wasn't for him. Oh and i never finished super mario world because the bullet bills scared the shit out of me when i was a kid; i always ran out of the room crying lol. Coming out of nowhere at crazy speeds, the size of skyscrapers. That evil grin still haunts me.