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 #
- Obliterator · 1989 Icon Design, Melbourne House
- Ocean Conqueror · 1987 Rack-It
- Octan · 1987 Silverbird
- Octipede · 1985 Paul Reynolds, 16/48 Tape Magazine
- Odyssey I · 1983 Perfection Software
- Off Road · 1990 Graftgold, Virgin Games
- Oh Mummy · 1984 Gem Software
- Ole, Toro · 1986 Dinamic
- Olympic Challenge · 1988 Ocean
- Omega One · 1987 J.S Computer Graphics, Mastertronic
- Omega Run · 1983 Richard Brisbourne, CRL Group
- Ometron · 1983 Simon Munnery, Software Projects
- One Day Cricket · 1983 Derek Baker, CRL Group
- One Man and His Droid · 1985 Clive Brooker, Mastertronic
- On the Run · 1985 Design Design
- Operation Hormuz · 1989 Again Again
- Operation Wolf · 1988 Ocean
- The Oracle's Cave · 1984 Chris Dorrell, Doric Computer Services
- The Orb · 1983 CRL Group
- Orbiter · 1982 Andrew Glaister, Silversoft
- Orbix · 1986 John Pragnell, Streetwise
- Orc Attack · 1984 Creative Sparks
- Orion · 1983 Ian Beynon, Software Projects
- Ostron · 1983 Andrew Glaister, Softek
- Othello · 1983 CDS Microsystems
- Outcast · 1987 The Zen Room, CRL Group
- Out of the Shadows · 1984 Mizar Computing
- Overlander · 1988 Elite
- Overlord · 1988 Ken Wright, CCS
- Overlords · 1985 John Pragnell, Lothlorien
- The O Zone · 1986 Compass
Oasis, Ocean, OCP, Odin, Oliver Twins, Omycron, One Week Productions, Opera, Origin Systems, Orpheus, Oxford Digital, Oxygen Software, Jon O'Brien, Niall O'Cleirigh, David O'Connor, Rick O'Neill, Brian O'Shaughnessy, Keith Owens, Paul Owens.