Atari 2600 Spiele (O)
| Name | Vermarkter | Wertung | Vorhandene Bilder |
| Obélix | Atari | ||
| Ocean City Defender | Zellers | ||
| Octopus | Carrere Video | ||
| Off the Wall | Atari |   | |
| Off Your Rocker | Amiga |  |
|
| Oink | Polyvox | ||
| Oink! | Activision | | |
| Okie Dokie | Retroware |  |
|
| Omega Race | CBS | ||
| Open Sesame | CCE | ||
| Open Sesame | Goliath | | |
| Open, Sesame! / Sesam, öffne dich! | Bit | | |
| Operacao AM-X | Dismac | ||
| Orbit Base | Dynamics | ||
| Oscar's Trash Race | Atari | | |
| Othello | Atari | ||
| Othello | CCE | ||
| Othello | Sears | ||
| Othello | Video Juego | ||
| Out of Control | Avalon Hill | ||
| Outer Space | Sears | ||
| Outlaw | Atari | | |
| Outlaw | Dynacom | ||
| Overkill | Hot Shot | ||
| Oystron | XYPE | |