Grew up with NES, and SNES as kid- I would play Genesis at my neighbors house. Since SNES had a large library of software its natural you'll come across more than a handful of stinkers, although Nintendo had a
seal of quality which resulted at minimum, fully playable (mostly glitch-free), decent games. Then again Nintendo has more censorship compared to Sega Genesis, so depending on your age with each system comes into factor.
Early on it became apparent certain developers, besides Nintendo, were creating some phenomenal software that I would keep an eye out for; Squaresoft, Konami, Capcom, for example. Although at the time competitors were releasing superior versions of arcade ports, SNES watered-down versions were still enjoyable. Nintendo's focus on developing games for their home console compared to only bringing over ports was one strong point. Super Mario World, The Legend of Zelda, Donky Kong Country, and from other developers Mega Man X, Castlevania etc.
A few personal favorites of mine growing up:
-Kirby Super Star, and Kirby's Dream Land 3
-Mega Man X, X2, X3, and 7
-Chrono Trigger
-Pocky & Rocky, 2
-Metal Warriors
-Secret of Mana
-Killer Instinct
-Street Fighter Alpha 2
-Rocky Rodent
-Plok
As for Super Famicom, like I mentioned earlier with such a vast library of software, similar to PlayStation 2, dozens of games are fair but plenty are spectacular and enjoyable for their time - today (thanks to fan-translations).
Many SNES games were eventually brought over to GBA down the line, years later we're seeing re-releases, or new games in a series which begun on SNES.
