# 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
| O TAC-TIC | ? | Tic Tac Toe |
| OBJECTIF EUROPE | COKTEL VISION | Geography tutor |
| OBJECTIF FRANCE | COKTEL VISION | Geography tutor |
| OBJECTIF MONDE I | COKTEL VISION | Geography tutor |
| OBJECTIF MONDE II | COKTEL VISION | Geography tutor |
| OBLITERATOR | MELBOURNE HOUSE | Maze exploration/shoot-'em-up |
| OBSIDIAN | ARTIC | Arcade adventure |
| OCEAN CONQUEROR | RACK IT | Submarine simulation |
| OCTOPLEX | MASTERTRONIC | Arcade/puzzle game |
| OEIL DE SET (L') | UBI SOFT | Text adventure with graphics |
| OFF SHORE WARRIOR | TITUS | Speedboat racing/shoot-'em-up |
| OFFICIAL FATHER CHRISTMAS (THE) | ALTERNATIVE | Miscellaneous games |
| OH MUMMY! | AMSOFT/GEM | Arcade game |
| OILMANIA | ASSEMBLY LINE / DREAMSOFT | Just like Pipemania |
| OINK! | CRL | Miscellaneous games |
| OLAF | AMSTRAD 100% | Puzzle game |
| OLD SAM'S SALOON GAMBLE MACHINE | ERNST KLASAREK | Fruit machine |
| OLE TORO | DINAMIC | Bull fights |
| OLE/RAGING BEAST | FIREBIRD/VIFI INTERNATIONAL | Bullfighting |
| OLLI AND LISSA III: THE CANDLELIGHT ADVENTURE | CODEMASTERS | Platform game/exploration |
| OLLI AND LISSA: THE GHOST OF SHILMOORE CASTLE | FIREBIRD | Platform game |
| OLYMPIAD | ATLANTIS | Miscellaneous games |
| OMEGA DIMENSION | POSITIVE | 3D beat'em up |
| OMEGA PLANETE INVISIBLE | INFOGRAMES | Graphic adventure |
| OMEYAD | UBI SOFT | Text / graphics |
| ON CUE | MASTERTRONIC | Snooker/pool |
| ON THE BENCH | CULT | Football management |
| ON THE OCHE | ARTIC | Darts |
| ON THE RUN | DESIGN DESIGN | 2D arcade / adv |
| ONE | EPYX / D3M | 2D graphics |
| ONE MAN AND HIS DROID | MASTERTRONIC | Maze exploration/puzzle game |
| OPERATION GUNSHIP | CODEMASTERS | Helicopter shoot-'em-up |
| OPERATION HANOI | PLAYERS | Target shooting |
| OPERATION HORMUZ | AGAIN AGAIN | Plane shoot-'em-up |
| OPERATION NEMO | COKTEL VISION | Target shooting |
| OPERATION THUNDERBOLT | OCEAN | Target shooting |
| OPERATION THUNDERBOLT (CARTRIDGE) | OCEAN | Target shooting |
| OPERATION WOLF | OCEAN | Target shooting |
| OPERATION WOLF (LIGHTGUN) | OCEAN | Target shooting (lightgun) |
| OPETROUS | JEAN REINGOT | Mathematics tutor |
| ORIENTAL GAMES | MICROSTYLE / FIREBIRD | Martial arts |
| ORIFICE FROM OUTER SPACE (THE) | PLASMA TOUCH | Text |
| ORION | JASAP SOFTWARE | Space inv. |
| ORMUZ | GENESIS SOFT | Submarine simulation |
| ORPHEE | LORICIEL | Text / graphics |
| OSPREY! | BES | Bird conservation |
| OTHELLO / REVERSI | ? | Othello |
| OTHELLO MASTER | POWER SOFT | Othello |
| OUT OF THIS WORLD | REAKTOR | Space shoot-'em-up |
| OUT RUN | US GOLD | Car racing |
| OUT RUN EUROPA | US GOLD | Racing |
| OUTBOARD | LORICIEL | Speedboat racing |
| OUTLAW | PLAYERS | Shoot-'em-up |
| OVERLANDER | ELITE | Car racing/shoot-'em-up |
| OVERLORD 2 | AMSOFT | Wargame |
| OXPHAR | ERE | Text adv. with graphics/icons |
| OXYDA | COUDRAY | Platforms |