Oh, this will be interesting
I'll guess, I'll forget the one or another game or have to cut down the list for the one or another platform
S-NES: Final Fantasy VI
Lufia 2
Chrono Trigger
Yoshi's Island
Sim City
Nintendo-HandheldsEvery Pokemon
Final Fantasy VI Remake
Some of the Yu-Gi-Oh-Games (WC's to be precise)
Every Fire Emblem
Dragon Quest IX
PSPDissidia 012
Final Fantasy Tactics: WotL
Persona 3
FF VII: Crisis Core
N64The Legend of Zelda: Ocarina of Time
Conker's Bad Fur Day
Banjo-Kazooie
Super Mario 64
Paper Mario
PSXFinal Fantasy VII <-- Overall #1
Final Fantasy VIII (damn you, Triple Triad!!!)
Wing Commander IV: The Price of Freedom
Grandia
Xenogears
PS2Metal Gear Solid 2 & 3
Final Fantasy X
Persona 4
Dragon Quest VIII
Grand Theft Auto: San Andreas
GamecubeThe Legend of Zelda: Twilight Princess
Metroid Prime
Eternal Darkness (underrated as hell)
Resident Evil 1 - Remake
Metal Gear Solid: The Twin Snakes (reason why MGS1 isn't in the PSX Top 5)
PS3Metal Gear Solid 4
Heavy Rain
ICO & Shadow of the Colossus Collection (reason why they aren't in the PS2-List)
Okami HD
Grand Theft Auto IV
PCDragon Age Origins & Awakening
Vampire: Bloodlines
Drakensang 2
Fallout: New Vegas
Civilization IV (only because of the Fall from Heaven Mod, respectively the even better Rise from Erebus)
Honorable Mentions:
Kessen II & III
Front Mission 3
Shenmue 1&2 (never owned a DC or X-Box)
Wild Arms 1 (and Alter Code: F, never released in Germany...)
Breath of Fire IV
Suikoden 2 & 5
Silent Hill 2
Mass Effect 1
Baldur's Gate 1 & 2
Planscape Torment
World of WarCraft
PS: Damn, didn't even mention stuff like Skyrim, Harvest Moon/Rune Factory, Command & Conquer, etc. @.@)