Games that use passwords to save progress.
Metroid
NES
1986
@1271Amnios
Amiga
1991
@725Super Castlevania IV
SNES
1991
@214Universal Soldier
SEGA Genesis
1992
@1870World of Illusion starring Mickey Mouse and Donald Duck
SEGA Genesis
1992
@943Chuck Rock
Sega CD
1992
@3494The Chaos Engine
Amiga
1993
@480Tetris Attack
SNES
1996
@253Arkanoid: Doh It Again
SNES
1997
@942