| GAMELIST | P4: Return to Ganymede | 2022 |
| GAMELIST | P47 Freedom Fighter
P-47: Thunderbolt | 1989 |
| GAMELIST | P*man Goes Planting  | 1985 |
| GAMELIST | Oxysudis | 1990 |
| GAMELIST | Oxyda
O.x.y.d.a | 1987 |
| GAMELIST | OVNI Samurai (30th @ CPCRetroDev 2020) | 2020 |
| GAMELIST | Overlander | 1988 |
| GAMELIST | Overheap (24th @ CPCRetroDev 2018) | 2018 |
| GAMELIST | Overdrive | 1985 |
| GAMELIST | Outlaws (1st @ CPCRetroDev 2016)
Outlaws Reloaded | 2016/2017 |
| GAMELIST | Outlaw | 1990 |
| GAMELIST | Out Run Europa
OutRun Europa | 1991 |
| GAMELIST | Out of this World (Andrew Richards) | 1987/2016/ |
| GAMELIST | Out of this World | 1987 |
| GAMELIST | Otti's Super Sound | 1985 |
| GAMELIST | Osotos | 2024 |
| GAMELIST | Oscar in a Jam | 1985/1986 |
| GAMELIST | Orion | 19xx |
| GAMELIST | Orc's Dungeon (2ND @ CPCRETRODEV 2014) | 2014 |
| GAMELIST | Orbit Chicane | 1987 |
| GAMELIST | OPQA vs. QAOP: The Final Battle (5th CPCRetroDev 2018) | 2018 |
| GAMELIST | Operation Wolf (version Magnum Lightphaser) | 1988 |
| GAMELIST | Operation Wolf: Plusedition | 20xx |
| GAMELIST | Operation Wolf | 1988 |
| GAMELIST | Operation Thunderbolt (GX4000) | 1990 |
| GAMELIST | Operation Thunderbolt | 1989 |
| GAMELIST | Operation Sertun | 1987 |
| GAMELIST | Operation Program Cleaner | 1991 |
| GAMELIST | Operation Omega | 1985/1987 |
| GAMELIST | Operation Nemo | 1987 |
| GAMELIST | Operation Hormuz | 1989 |
| GAMELIST | Operation Hanoi | 1990 |
| GAMELIST | Operation Gunship | 1989 |
| GAMELIST | Operation Desert Storm | 1995 |
| GAMELIST | Operation Alexandra (1st CPCRetroDev 2018) | 2018 |
| GAMELIST | One Wonder (CPCRetroDev 2023) | 2023 |
| GAMELIST | One Man and His Droid | 1985 |
| GAMELIST | Omeganea | 1986/1987 |
| GAMELIST | Omega Dimension
Dimension Omega | 1989 |
| GAMELIST | Olli And Lissa: The Ghost of Shilmoore Castle | 1987 |
| GAMELIST | Olli And Lissa 3: The Candlelight Adventure | 1989 |
| GAMELIST | Oink! | 1987 |
| GAMELIST | Oil Panic (Amstrad Magazine) | 1985 |
| GAMELIST | Oil Panic (CPC Revue) | 1988 |
| GAMELIST | Oil Panic | 2021 |
| GAMELIST | Oil | 1987 |
| GAMELIST | OIK | 1988/1989 |
| GAMELIST | OH NO, My Moustache! | 2022 |
| GAMELIST | Oh Mummy
Oh Momies!
Schatz der Pharaonen | 1984 |
| GAMELIST | Oh Mummy Resurrected | 1984/2025 |
| GAMELIST | Oh Chute! | 2024 |
| GAMELIST | Off Shore Warrior | 1989 |
| GAMELIST | Octopus GX4000 | 2023 |
| GAMELIST | Octopus Deluxe | 2023 |
| GAMELIST | Octopus 21 | 2023 |
| GAMELIST | Octopus | 2021 |
| GAMELIST | Octoplex | 1989 |
| GAMELIST | Oceano | 2015 |
| GAMELIST | Obstacle (Amstrad Games Book) | 1985 |
| GAMELIST | Obsidian
L'hepiss | 1985 |
| GAMELIST | Obliterator | 1989 |
| GAMELIST | Objectif 10000 | 198x |
| GAMELIST | Oberon 69 | 1990 |
| GAMELIST | Obbiettivo Visitors | 1985 |
| GAMELIST | NWO (27th @ CPCRetroDev 2015) | 2015 |
| GAMELIST | Numerus | 1985 |
| GAMELIST | Number Shooter (Amstrad Action) | 1993 |
| GAMELIST | Number Scoffer (Amstrad Action) | 1992/1993 |
| GAMELIST | Number 1 | 1985 |
| GAMELIST | Nuke Bug (CPCRetroDev 2023) | 2023 |
| GAMELIST | Nucleo Energetico | /1985/1986/ |
| GAMELIST | Nuclear Heist | 1986 |
| GAMELIST | Nova Race | 2022 |
| GAMELIST | Noughts And Crosses (Disk 50) | 1986 |
| GAMELIST | Noughts and Crosses | 1992 |
| GAMELIST | North Star | 1988 |
| GAMELIST | North and South
Nord et Sud: les Tuniques Bleues
Norte y Sur | 1991/1990 |
| GAMELIST | Normal Kombat | 1994 |
| GAMELIST | Nonterraqueous | 1985 |
| GAMELIST | Nonamed | 1986 |
| GAMELIST | Nom Wars | 2022 |
| GAMELIST | Nogalious | 2019 |
| GAMELIST | Nodes Of Yesod | 1986 |
| GAMELIST | Nocturno | 198x |
| GAMELIST | No Exit  | 1990 |
| GAMELIST | Nitro | 1992 |
| GAMELIST | Nita (CPCRetroDev 2023) | 2023/2024 |
| GAMELIST | Ninjajar: the lost levels | 2017 |
| GAMELIST | Ninja Spirit | 1990 |
| GAMELIST | Ninja Scooter Simulator | 1988 |
| GAMELIST | Ninja Massacre | 1989 |
| GAMELIST | Ninja Hamster | 1987 |
| GAMELIST | Ninja Grannies | 1989 |
| GAMELIST | Ninja Commando | 1988 |
| GAMELIST | Ninja (Black System) | 1990 |
| GAMELIST | Ninja | 1987 |
| GAMELIST | Nightmare Maze | 1986 |
| GAMELIST | Nightmare Fortress (9th @ CPCRetroDev 2017) | 2017 |
| GAMELIST | Nightforce | 1987 |
| GAMELIST | Nightbreed
Razas de Noche
The Night Breed | 1990 |
