Is it cheating when I say that my absolute favourite SNES ?title? is the Super Game Boy peripheral...? I LOVED playing Pok?mon Red on the big screen as a kid. There was just nothing like pulling the cartridge out of your Game Boy when you came home from school and continuing the game on your SNES.
Super Metroid easily. The best part about it is that even though the game is ancient, it still holds up surprisingly well!
I should go back and replay it sometime tbh
I can go on and on about the different RPGs, and classic games I adore, but I get the feeling Super Mario World ends up on top.
The ingame stages weren't enough for me. I'd played the game so many times, yet I'm actually still learning about new stuff I can do that I just didn't know.
Runners up absolutely must include Chrono Trigger, though I've only played the DS version, Super Mario RPG, and Zelda: A Link to the Past.
For me, it's quite a toss-up between Super Mario World, Yoshi's Island, The Legend of Zelda: A Link to the Past, Donkey Kong Country 2 and Super Metroid. I'll have to say that the latter happen to have a slight edge over the rest of the classics, thanks to its high amount of replayability and non-linearity in its level design.
My favorite SNES title, at least that is coming to mind at the moment, is EarthBound. I've been interested in the game since I first saw it, it has a fun and unique atmosphere (music, art, dialogue, etc.), and it's fun to play.
Zombies Ate My Neighbors is another great SNES game, but I wouldn't consider it for this since it was cross-platform and as such I have more experience with the Sega Genesis version. Also, though they weren't released outside of Japan officially, I'm also fond of Clock Tower and Fire Emblem: Genealogy of the Holy War for the Super Famicom.
I feel like I'm probably forgetting something, but if so I'll just post again.