Region | Title | System | Version | Edition | Languages | Serial | Status |
 | O Xephteris Taxideuei stin Ellada Ο Ξεφτέρης ταξιδεύει στην Ελλάδα | PC | | Original | | |  |
 | Oddworld: Abe's Exoddus (CD Installieren) | PC | 2.0 | Original | | |  |
 | Oddworld: Abe's Exoddus (CD Abspielen) | PC | 2.0 | Original | | |  |
 | Offroad Off-Road Redneck Racing | PC | | Original | | ECD 000592K |  |
 | Olivers Äventyr: Drakens Förbannelse | PC | | Original | | 021120110 |  |
 | One Must Fall: Battlegrounds | PC | 2090 | Original | | |  |
 | Operation Flashpoint: Cold War Crisis | PC | 1.0 | Original | | MOPFCDEU00 |  |
 | Operation Flashpoint: Cold War Crisis | PC | 1.46 | Sold Out Software | | |  |
 | Operation Flashpoint: Cold War Crisis | PC | 1.46 | Sold Out Software | | |  |
 | Operation: Surgery Has Never Been so Silly! | PC | | Sold Out Software | | |  |
 | The Operational Art of War II: 1956-2000 The Operational Art of War II: Bewaffnete Konflikten | PC | | Original | | |  |
 | Oddworld: Abe's Exoddus (Install Disc) | PC | 2.0 | Original | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus (Play Disc) | PC | 2.0 | Original | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Operation Flashpoint: Cold War Crisis | PC | 1.0 | Original, Gold Edition | | MOPFCDEU00 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Operation Flashpoint: Cold War Crisis | PC | | The Games Collection | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Operation Flashpoint: Resistance | PC | 1.75 | Original | | MOFRCDEU00 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | The Operative: No One Lives Forever (Disc 1) | PC | 1.0 | Original | | FXX08903223D1 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |