I agree wholeheartedly with Metroid, I didn't like original Metroid at all while Super Metroid is an absolute masterpiece. But Zelda 1 is my all time favorite Zelda (and game in general, really), and I really love Zelda 2 as well. But for other pluses to the SNES, Mega Man X and X2 are better than any NES Mega Man games (as great as 2 and 3 were; never played X3), Final Fantasy II / IV and Final Fantasy III / VI are LIGHTYEARS beyond Final Fantasy I, and Super Mario World is better than any NES Mario game.