Region | Title | System | Version | Edition | Languages | Serial | Status |
| Off-World Interceptor | 3DO | | Original | | | |
| Overlord II | XBOX360 | | Original | | CM-2057 | |
| Over G Fighters | XBOX360 | | Original | | TI-2001 | |
| The Outfit | XBOX360 | | Original | | TQ-2002 | |
| Operation Flashpoint: Red River | XBOX360 | | Original | | CM-2104 | |
| Operation Flashpoint: Dragon Rising | XBOX360 | | Original | | CM-2065 | |
| Onechanbara: Bikini Samurai Squad | XBOX360 | | Original | | DP-2026 | |
| Omerta: City of Gangsters | XBOX360 | | Original | | KY-2021 | |
| OutRun 2006: Coast 2 Coast | XBOX | | Original | | SE-136 | |
| Operation Flashpoint: Elite | XBOX | | Original | | CM-090 | |
| Official Xbox Magazine Game Disc 56 | XBOX | | Original | | IM-225 | |
| Official Xbox Magazine Game Disc 55 | XBOX | | Original | | IM-217 | |
| Official Xbox Magazine Game Disc 53 | XBOX | | Original | | IM-212 | |
| Official Xbox Magazine Game Disc 52 | XBOX | | Original | | IM-210 | |
| Official Xbox Magazine Game Disc 50 | XBOX | | Original | | IM-050 | |
| Official Xbox Magazine Game Disc 49 | XBOX | | Original | | IM-049 | |
| Official Xbox Magazine Game Disc 47 | XBOX | | Original | | IM-047 | |
| Official Xbox Magazine Game Disc 45 | XBOX | | Original | | IM-045 | |
| Official Xbox Magazine Game Disc 44 | XBOX | | Original | | IM-044 | |
| Official Xbox Magazine Game Disc 43 | XBOX | | Original | | IM-043 | |
| Official Xbox Magazine Game Disc 42 | XBOX | | Original | | IM-042 | |
| Official Xbox Magazine Game Disc 41 | XBOX | | Original | | IM-041 | |
| Official Xbox Magazine Game Disc 40 | XBOX | | Original | | IM-040 | |
| Official Xbox Magazine Game Disc 39 | XBOX | | Original | | IM-039 | |
| Official Xbox Magazine Game Disc 38 | XBOX | | Original | | IM-038 | |
| Official Xbox Magazine Game Disc 37 | XBOX | | Original | | IM-037 | |
| Official Xbox Magazine Game Disc 36 | XBOX | | Original | | IM-036 | |
| Official Xbox Magazine Game Disc 35 | XBOX | | Original | | IM-035 | |
| Official Xbox Magazine Game Disc 34 | XBOX | | Original | | IM-034 | |
| Official Xbox Magazine Game Disc 33 | XBOX | | Original | | IM-033 | |
| Official Xbox Magazine Game Disc 32 | XBOX | | Original | | IM-032 | |
| Official Xbox Magazine Game Disc 31 | XBOX | | Original | | IM-031 | |
| Official Xbox Magazine Game Disc 30 | XBOX | | Original | | IM-030 | |
| Official Xbox Magazine Game Disc 29 | XBOX | | Original | | IM-029 | |
| Official Xbox Magazine Game Disc 28 | XBOX | | Original | | IM-028 | |
| Official Xbox Magazine Game Disc 27 | XBOX | | Original | | IM-027 | |
| Official Xbox Magazine Game Disc 26 | XBOX | | Original | | IM-026 | |
| Official Xbox Magazine Game Disc 25 | XBOX | | Original | | IM-025 | |
| Official Xbox Magazine Game Disc 23 | XBOX | | Original | | IM-023 | |
| Official Xbox Magazine Game Disc 23 | XBOX | | Original | | IM-024 | |
| Official Xbox Magazine Game Disc 22 | XBOX | | Original | | IM-022 | |
| Official Xbox Magazine Game Disc 21 | XBOX | | Original | | IM-021 | |
| Official Xbox Magazine Game Disc 20 | XBOX | | Original | | IM-020 | |
| Official Xbox Magazine Game Disc 19 | XBOX | | Original | | IM-019 | |
| Official Xbox Magazine Game Disc 17 | XBOX | | Original | | IM-017 | |
| Official Xbox Magazine Game Disc 16 | XBOX | | Original | | IM-016 | |
| Official Xbox Magazine Game Disc 14 | XBOX | | Original | | IM-014 | |
| Official Xbox Magazine Game Disc 01 | XBOX | | Original | | IM-001 | |
| Overwatch | PC | | Origins Edition | | | |
| The Orange Box (Disc 1) | PC | | Original, EA Classics | | 985207, VAE07705811D, VAE07705811D/ENG, VAE07707118D/ENG, VAX07705811D/AUS | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.004 | Game of the Year Edition, Game of the Year Edition (BestSeller Series), Game of the Year Edition (Covermount) | | JCPL11, S0026179, S0026696 | |
| Operation Flashpoint: Gold Upgrade | PC | 1.30 | Original, Gold Edition | | MOFUCDEU00, MOFUCDUS00 | |
| Open Season (Disc 3) | PC | 1.00 | Original | | 5004904-CD 3 | |
| Open Season (Disc 2) | PC | 1.00 | Original | | 5004904-CD 2 | |
| One Piece: Romance Dawn: Bouken no Yoake ワンピース ROMANCE DAWN 冒険の夜明け | PSP | 1.01 | Original | | ULJS 00550 … | |
| Off Road | PSP | 1.01 | Original | | ULES-00963 | |
| Ookami: Zekkeiban 大神 絶景版 | PS3 | 00.00 | Original, PlayStation 3 the Best, PlayStation 3 the Best (Reprint) | | BLJM 55061 … | |
| One Piece: Kaizoku Musou ワンピース 海賊無双 | PS3 | 01.02 | Original, Treasure Box | | BLAS 50450 … | |
| Outlaw Volleyball Remixed | PS2 | 1.01 | Original | | SLES-53138 … | |
| Onimusha 3 | PS2 | 1.01 | Original | | SLES-51914 … | |
| Official PlayStation 2 Magazine Demo 9 | PS2 | 1.10 | | | SCED-50144 | |
| Official PlayStation 2 Magazine Demo 87 | PS2 | 1.01 | | | SCED-54412 | |
| Official PlayStation 2 Magazine Demo 81 | PS2 | 1.00 | | | SCED-54406 … | |
| Official PlayStation 2 Magazine Demo 80 | PS2 | 1.00 | | | SCED-54405 | |
| Official PlayStation 2 Magazine Demo 79 | PS2 | 1.00 | | | SCED-54404 | |
| Official PlayStation 2 Magazine Demo 78 | PS2 | 1.00 | | | SCED-54403 | |
| Official PlayStation 2 Magazine Demo 77 | PS2 | 1.01 | | | SCED-54049 | |
| Official PlayStation 2 Magazine Demo 76 | PS2 | 1.01 | | | SCED-54048 | |
| Official PlayStation 2 Magazine Demo 75 | PS2 | 1.00 | | | SCED-54047 | |
| Official PlayStation 2 Magazine Demo 74 | PS2 | 1.00 | | | SCED-54046 | |
| Official PlayStation 2 Magazine Demo 73 | PS2 | 1.01 | | | SCED-54045 | |
| Official PlayStation 2 Magazine Demo 70 | PS2 | 1.01 | | | SCED-54024 … | |
| Official PlayStation 2 Magazine Demo 68 | PS2 | 1.00 | | | SCED-53171 … | |
| Official PlayStation 2 Magazine Demo 66 | PS2 | 1.00 | | | SCED-53169 | |
| Official PlayStation 2 Magazine Demo 60 | PS2 | 1.00 | | | SCED-53290 | |
| Official PlayStation 2 Magazine Demo 59 | PS2 | 1.00 | | | SCED-53289 | |
| Official PlayStation 2 Magazine Demo 58 | PS2 | 1.00 | | | SCED-53288 | |
| Official PlayStation 2 Magazine Demo 57 ops2m demo 57 | PS2 | 1.00 | | | SCED-53228 … | |
| Official PlayStation 2 Magazine Demo 55 | PS2 | 1.01 | | | SCED-52170 | |
| Official PlayStation 2 Magazine Demo 52 ops2m demo 52 | PS2 | 1.01 | | | SCED-52938 | |
| Official PlayStation 2 Magazine Demo 51 | PS2 | 1.00 | | | SCED-52786 … | |
| Official PlayStation 2 Magazine Demo 50 ops2m demo 50 | PS2 | 1.02 | | | SCED-52785 … | |
| Official PlayStation 2 Magazine Demo 48 | PS2 | 1.01 | | | SCED-52619 … | |
| Official PlayStation 2 Magazine Demo 47 ops2m demo 47 | PS2 | 1.01 | | | SCED-52162 … | |
| Official PlayStation 2 Magazine Demo 46 | PS2 | 1.01 | | | SCED-52161 … | |
| Official PlayStation 2 Magazine Demo 45 | PS2 | 1.02 | | | SCED-52160 | |
| Official PlayStation 2 Magazine Demo 44 | PS2 | 1.01 | | | SCED-52052 … | |
| Official PlayStation 2 Magazine Demo 43 | PS2 | 1.00 | | | SCED-52051 | |
| Official PlayStation 2 Magazine Demo 42 | PS2 | 1.04 | | | SCED-51539 … | |
| Official PlayStation 2 Magazine Demo 41 ops2m 41 | PS2 | 1.01 | | | SCED-51536 … | |
| Official PlayStation 2 Magazine Demo 40 | PS2 | 1.02 | | | SCED-51535 … | |
| Official PlayStation 2 Magazine Demo 39 | PS2 | 1.02 | | | SCED-51540 … | |
| Official PlayStation 2 Magazine Demo 38 | PS2 | 1.00 | | | SCED-51538 | |
| Official PlayStation 2 Magazine Demo 37 | PS2 | 1.00 | | | SCED-51537 | |
| Official PlayStation 2 Magazine Demo 36 | PS2 | 1.00 | | | SCED-51534 | |
| Official PlayStation 2 Magazine Demo 34 | PS2 | 1.01 | | | SCED-51532 | |
| Official PlayStation 2 Magazine Demo 33 | PS2 | 1.01 | | | SCED-51531 | |
| Official PlayStation 2 Magazine Demo 32 | PS2 | 1.00 | | | SCED-51530 | |
| Official PlayStation 2 Magazine Demo 31 | PS2 | 1.02 | | | SCED-51529 | |
| Official PlayStation 2 Magazine Demo 29 | PS2 | 1.01 | | | SCED-51384 … | |
| Official PlayStation 2 Magazine Demo 27 | PS2 | 1.01 | | | SCED-50749 … | |
| Official PlayStation 2 Magazine Demo 26 | PS2 | 1.02 | | | SCED-50748 … | |
| Official PlayStation 2 Magazine Demo 25 | PS2 | 1.00 | | | SCED-50747 … | |
| Official PlayStation 2 Magazine Demo 24 | PS2 | 1.10 | | | SCED-50746 | |
| Official PlayStation 2 Magazine Demo 23 | PS2 | 1.00 | | | SCED-50745 | |
| Official PlayStation 2 Magazine Demo 22 | PS2 | 1.00 | | | SCED-50744 … | |
| Official PlayStation 2 Magazine Demo 21 | PS2 | 1.00 | | | SCED-50742 … | |
| Official PlayStation 2 Magazine Demo 18 | PS2 | 1.00 | | | SCED-50153 … | |
| Official PlayStation 2 Magazine Demo 17 | PS2 | 1.00 | | | SCED-50152 … | |
| Official PlayStation 2 Magazine Demo 16 | PS2 | 1.00 | | | SCED-50151 | |
| Official PlayStation 2 Magazine Demo 14 | PS2 | 1.00 | | | SCED-50610 … | |
| Official PlayStation 2 Magazine Demo 13 | PS2 | 1.00 | | | SCED-50148 | |
| Official PlayStation 2 Magazine Demo 10 | PS2 | 1.10 | | | SCED-50145 | |
| Official PlayStation 2 Magazine Demo 2 | PS2 | 1.00 | | | SCED-50066 | |
| Official PlayStation 2 Magazine Demo 1 | PS2 | 1.00 | | | SCED-50065 | |
| Obliterate | PS2 | 1.01 | Original | | SLES-53355 … | |
| OPSM Best PS One Games Ever Official Australian PlayStation Magazine Demo 44 | PSX | | | | SCED-03239 | |