I take it as what games were the most demanding for the system they were on?
In any case, the titles bolded in italic are the ones I think look best. The others are contenders.
NES:
- Kirbi's Adventure (That game looked like a SNES game FFS!)
- Dragon Quest IV
SNES:
- Street Fighter Alpha 2
- Star Ocean
- Seiken Densetsu 3
- Donkey Kong Country series
- Super Mario World 2: Yoshi's Island
- Tales of Phantasia
- StarFox
Sega Genesis:
- Vectorman
- Virtua Racing
- Comix Zone
- Gunstar Heroes
- Sonic 3 and Knuckles
Nintendo 64:
- The Legend of Zelda: Majora's Mask (no contest there)
Playstation:
- Tobal 2
- Final Fantasy IX
- Metal Gear Solid
- Einhander
- Gran Turismo 2
- Chrono Cross
- Tekken 3
Saturn:
- Guardian Heroes
- Panzer Dragoon Saga
- Knights Into Dreams
Playstation 2:
- God of War 2
- Gran Turismo 4
- Final Fantasy XII
- Dragon Quest VIII
- Metal Gear Solid 3
- Grand Theft Auto: San Andreas
- Shadow of the Colossus
Sega Dreamcast:
- Shenmue series
- Metropolis Street Racer
- Jet Set Radio
- Phantasia Star Online
- Skies of Arcadia
- Sonic Adventure 2
Gamecube:
- Star Wars Rogue Leader: Rogue Squadron 2
- The Legend of Zelda: Twilight Princess
- F-Zero GX
- Metroid Prime 2: Echoes
- Resident Evil 4
XBox:
- Ninja Gaiden Black
- Doom 3
- Fable
- Project Gotham Racing 2
- Halo 2
Wii:
- Muramasa
- Super Mario Galaxy 2
-Donkey Kong Country Returns
- The Last Story
- Xenoblade
- Metroid Other M
- The Legend of Zelda: Skyward Sword
XBox 360:
- Halo 4
- Forza 4
- Crysis 3
- Metro: Last Light
- Bioshock Infinite
PS3:
- Gran Turismo 5
- God of War 3
- Uncharted 3: Drake's Deception
- The Last of Us
- God of War Ascension
- Crysis 3
