gold is for GBC... Anyways: SNES: Either Donkey Kong Country 2 or Super Mario Allstars+World (That is one cart/game with allstars and world on it) GBA: WarioWare Twisted!, Wario Land 3 if GBC counts. N64: Conker's Bad Fur Day, with Majora's Mask as a close second.
SNES: Legend of Zelda: A Link to the past GBA: Summon Night: Swordcraft Story 1 & 2, with Legend of Zelda: Minish Cap a close second N64: Legend of Zelda: Ocarina of Time and Legend of Zelda: Majora's Mask
It isn't overrated I'm going to go Chrono Trigger/ Yoshi's Island (the GBA version had additional levels and I hadn't played the SNES version before playing it on the GBA) and The Legend of Zelda: Ocarina of Time.
SNES: Chrono Trigger N64: Never really had the system, but I enjoyed Goldeneye a whole lot. GBA: Castlevania: Aria of Sorrow
SNES: Metroid N64: Goldeneye or Mariokart GBA: Ice Age first ever game on game boy, and I loved it, may be considered bad, but it still has a special place in my video game heart
I'm going to list my favorite game for every Nintendo system that I owned. NES: Castlevania III: Dracula's Curse SNES: Super Metroid N64: Paper Mario GC: Resident Evil Wii: Donkey Kong Country Returns GB: The Legend of Zelda: Link's Awakening GBA: Metroid Zero Mission DS: Contra 4
SNES: Legend of Zelda: A Link to the Past GBA: Advance Wars 2: Black Hole Rising N64: Legend of Zelda: Ocarina of Time