Amiga

Oath, The

Obitus

Obliterator

Obsession

Odyssee, Die

Odyssey

Off Shore Warrior

Oh No! More Lemmings

Oil Barons

Oil Imperium

Oliver & Company

OloFight

Olympique de Marseille

Omar Sharif's Bridge

Omega

Omni-Play Basketball

Omnicron Conspiracy

On the Road

One on One

One Step Beyond

onEscapee

Onslaught

Ooops Up

Ooze: Creepy Nites

Operation Com-Bat

Operation Combat II: By Land, Sea & Air

Operation Harrier

Operation Jupiter

Operation Stealth

Operation Thunderbolt

Operation Wolf

Orbit 2000

Orbital Destroyer

Oriental Games

Original Scrabble

Ork

Oscar

Osiris

Othello Killer

1

Outlands

OutRun

1

OutRun Europa

Outzone

Over the Net

1

Overdrive

Overlander

Overlord

Overrun!

Oxxonian

Oxyd

Oxyd Magnum!