0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Oddessy
	Publisher The Guild Adventure Software (1986) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Brendan Clarke Music (None) Language English

Odyssey, The
	Publisher Duckworth Home Computing (1986) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Mike Gerrard & Peter Gerrard Music (None) Language English

Old West
	Publisher COMPUTE! Publications, Inc. (1984) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder B.A. Miller Music (None) Language English

On Safari
	Publisher Sunshine Books/micro Adventurer (1984) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Jullian Marshall-James Music (None) Language English

On the Way to the Interview
	Publisher (Unknown) (19??) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder (Unknown) Music (None) Language English

Ontsnapping, De
	Publisher (Public Domain) (1996) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Alex Dijkstra Music (None) Language Dutch

Opera House
	Publisher (1985) Developer Bignose Software Genre Adventure - Text only Commodore 64 Coder Peter Sleeman & Steve Calkin Music (None) Language English

Operation Mainframe
	Publisher Argus Specialist Publications Ltd./Home Computing Weekly (1985) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Simon Eyre Music (None) Language English

Operation: Sabotage
	Publisher The Guild Adventure Software (19??) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Tim Buja Music (None) Language English

Oprør På Nyx
	Publisher Sepia Adventures (1988) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Jens-Erik Kjeldsen Music (None) Language Danish

Orathan
	Publisher (Public Domain) (2003) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Paul Allen Panks Music (None) Language English

Orb
	Publisher (Unknown) (1983) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Jarkko Kallinen Music (None) Language English

Orb of Light, The
	Publisher Wilson Software (19??) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder (Unknown) Music (None) Language English

Orc's Siege
	Publisher (Unknown) (19??) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Jim Stoessner Music (None) Language English

Orient Express, The
	Publisher Microsoft Press (1986) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder David H. Ahl Music (None) Language English

Ork! House of Fortune
	Publisher (Unknown) (19??) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder (Unknown) Music (None) Language English

Out of this World
	Publisher (Public Domain) (198?) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Matthew Hall Music (None) Language English

Overlord
	Publisher The Guild Adventure Software (19??) Developer (Unknown) Genre Adventure - Text only Commodore 64 Coder Elise C. Bucher (Zosia the Pious) Music (None) Language English