N64 actually had a pretty loaded first year, just had no support/filler titles.
Super Mario 64
GoldenEye
Mario Kart 64
Star Fox 64 w/Rumble Pak
Pilotwings 64
Wave Race 64
Blast Corps
Killer Instinct Gold
Turok: Dinosaur Hunter
Tetrisphere
Star Wars: Shadows of the Empire
International Superstar Soccer 64