O Pulador Q'Bert
O'Riley's Mine (C64)
Oasis of Shalimar, The (C64)
Obelix
Obitus (SNES)
Ocean Battle (Arcadia 2001)
Ocean City Defender
Ocean Conqueror (C64)
Ochan no Oekaki Logic (SNES)
Octapolis (C64)
Oda Nobunaga: Haou no Gundan (SNES)
Odekake Lester: Lelele no Le (^^; (SNES)
Odyssey (C64)
Odyssey 2 (Odyssey 2)
Oekaki Logic (SNES)
Oekaki Logic 2 (SNES)
Off Your Rocker
Off the Wall
Ogre (C64)
Ogre Battle (SNES)
Oh No! (C64)
Oil Imperium (German) (C64)
Oil's Well (Coleco)
Oils Well (C64)
Oink
Oink! (C64)
Oink(Cromax)
Oink(Polyvox)
Oink! (C64)
Oli! (C64)
Olivia no Mystery (SNES)
Olli & Lissa 3: The Candlelight Adventure (C64)
Olli & Lissa: The Ghost of Shilmore Castle (C64)
Ollie's Follies (C64)
Olympic Gold (Sega Genesis)
Olympic Skier (C64)
Olympic Spectacular (C64)
Olympic Summer Games (Super Nintendo)
Olympic Summer Games 92 (Sega Genesis)
Olympic Summer Games 96 (Sega Genesis)
Olympic Winter Games 94 (Sega Genesis)
Omega Force One (C64)
Omega Race
Omega Race (C64)
Omega Race (Coleco)
Omega Race (Vic 20)
Omega: Planete Invisible (C64)
On Court Tennis (C64)
On Cue (C64)
On Field Football (Budget release) (C64)
On Field Football (C64)
On Track Racing (C64)
On the Ball (SNES)
On the Bench (C64)
On the Tiles (C64)
Onanie-Schule (German) (C64)
One Day Cricket (C64)
One Man and His Droid (C64)
One On One: Julius Erving and Larry Bird (C64)
One on One Backyard Basketball (C64)
One on One Basketball (Coleco)
One on One: Michael Jordan and Larry Bird (C64)
One-On-One (Atari 800)
One-On-One (Atari 800)
One-on-One Basketball (Atari 7800)
Ongaku Tsukuru: Kanadeeru (SNES)
Onita Atsushi: FMW (SNES)
Onizuka Katsunari Super Virtual Boxing (SNES)
Onslaught (Sega Genesis)
Oomono Black Bass Fishing: Jinzouko-Hen (SNES)
Oops! (C64)
Ooze (Sega Genesis)
Oozumoukon (SNES)
Open Sesame
Operacao AM-X
Operation Anoria (C64)
Operation Europe (SNES)
Operation Europe (Sega Genesis)
Operation Europe: Path to Victory (SNES)
Operation Fireball (C64)
Operation Hanoi (C64)
Operation Hongkong (German) (C64)
Operation Hormuz (C64)
Operation Ironhawk (C64)
Operation Logic Bomb (SNES)
Operation Market Garden (C64)
Operation Neptun (German) (C64)
Operation Thunderbolt (C64)
Operation Thunderbolt (SNES)
Operation Whirlwind (C64)
Operation Wolf (C64)
Operation Wolf (NES)
Oraga Land Shusai: Best Farmer Shuukaku-Sai (SNES)
Orange Squash (C64)
Orb (C64)
Orbitron (C64)
Orc Attack (C64)
Ormus Saga II: Guild of Death, The (C64)
Ormus Saga, The (C64)
Oscar (SNES)
Oscar's Trash Race
Oskar (C64)
Oslo Bxrs (C64)
Osmium (C64)
Osprey! (C64)
Ossu!! Karate-Bu (SNES)
Ostfrieslandgames (C64)
Othello
Othello (NES)
Othello (TI-99/4A)
Othello World (SNES)
Othello(Sears Telegames)
Othello World (SNES)
Othelo
Otoboke Ninja Colosseum (SNES)
Otogirisou (SNES)
Out Run (C64)
Out Run Europa (C64)
Out of Control
Out of This World (Sega Genesis)
Out of This World (Super Nintendo)
Out of this World (C64)
Out on a Limb (C64)
Out to Lunch (SNES)
Outback (C64)
Outer Space
Outer World (SNES)
Outlander (SNES)
Outlander (Sega Genesis)
Outlaw
Outlaw (C64)
Outlaw(Digivision)
Outlaw(Cromax)
Outlaw(Dynacom)
Outlaw (C64)
Outlaws (C64)
Outrun (Sega Genesis)
Outrun 2019 (Sega Genesis)
Outrunners (Sega Genesis)
Over the Net (C64)
Overlander (C64)
Overlord (C64)
Overrun: Europe (C64)
Overrun: Mideast (C64)
Ovni (Odyssey 2)
Oxxonian (C64)