Pretty straightforward. This may seem like blasphemy to some, but the only Mario games I like are on the SNES (excluding some of the later Kart games and Mario Land 2 on the Gameboy). Between the two Super Mario World games, I'd have to give a nod to the first one over Yoshi's Island... Both games are fantastic, but I played the original much more as a kid, ergo I have fonder memories of it. :P I've never understood why NES Mario and 3D Mario games have enjoyed the popularity they have... But hey, that's for you guys to share!