O
| Name | Release Date | Publisher |
|---|---|---|
| Obliterator | 1988 | Melbourne House |
| Obsidian | 1985 | Artic Software |
| Octoplex | 1989 | Mastertronic |
| Off Shore Warrior | 1988 | Titus Software |
| Official Father Christmas, The | 1989 | Alternative Software |
| Oh Mummy | 1984 | Amsoft/Gem Software |
| Olé | 1987 | Firebird Software |
| Olli and Lissa III: The Candlelight Adventure | 1989 | Codemasters |
| Olli and Lissa: The Ghost of Shilmoore Castle | 1987 | Firebird Software |
| Olympiad '86 | 1986 | Atlantis Software |
| Omeyad | 1989 | UBI Soft |
| On Cue | 1987 | Mastertronic |
| On the Oché | 1984 | Artic Software |
| On the Run | 1985 | Design Design |
| One Man and his Droid | 1986 | Mastertronic |
| Operation Gunship | 1989 | Codemasters |
| Operation Hanoi | 1990 | Players Software |
| Operation Hormuz | 1989 | Again Again |
| Operation Thunderbolt | 1989 | Ocean Software |
| Operation Wolf | 1988 | Ocean Software |
| Orion Prime | 2009 | CargoSoft |
| Orphée | 1985 | Loriciels |
| Out Run | 1987 | U.S. Gold |
| Out Run Europa | 1991 | U.S. Gold |
| Out of this World | 1987 | Reaktör |
| Outboard | 1990 | Loriciels |
| Outlaw | 1990 | Players Software |
| Overlander | 1988 | Elite Systems |
| Oxphar | 1987 | ERE Informatique |
Read more about this topic: List Of Amstrad CPC Games