SHINE_GET_64 posted... Add the following to the list of significant games not on any service please and thank you
Body Harvest
The Legend of the Mystical Ninja Starring Goemon
Goemon's Great Adventure
Hybrid Heaven
Mortal Kombat: Mythologies Sub-Zero (for the lulz)
Mortal Kombat Trilogy
Quest 64
San Francisco Rush/Rush 2/Rush 2049
Shadowgate 64
Star Wars: Shadows of the Empire
These are not significant.
Underleveled posted...
Some significant titles that aren't available/confirmed on any VC release yet:
Banjo-Tooie
Blast Corps
Bomberman 64: The Second Attack!
Castlevania
Castlevania: Legacy of Darkness
ClayFighter 63 1/3
Conker's Bad Fur Day
Diddy Kong Racing
Hey You, Pikachu!
Jet Force Gemini
Killer Instinct Gold
Mischief Makers
Perfect Dark
Snowboard Kids
Snowboard Kids 2
Space Station Silicon Valley
Star Wars: Rogue Squadron
Some of them are in Rare Replay at least. God I wish that was on PC...