Check out the top rated Action abandonware games, based on user ratings.
Orin 1
Commodore 64
1983
Orion
Commodore 64
1988
Orius
Arcade
1991
Orpheus in the Underworld
Commodore 64
1986
Osbit
DOS
1988
Oscar
DOS, Amiga, Amiga CD32
1994
Osomatsu-kun: Hachamecha Gekijō
Genesis
1988
Otto Matic
Windows, Mac
2005
Outbreak
Windows
2006
Outlaw
Atari 2600
1978
Out on a LEM
DOS
1984
Out on a Limb
Commodore 64, Commodore 16, Plus/4
1985
Outroyd
MSX
1985
Out Zone
Arcade
1990
OZone
Windows
1997
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