| Never 7 - The End of Infinity | 2000 | dreamcast, ps2 |
| New Game! The Challenge Stage! | 2017 | vita |
| Night Call | 2020 | switch |
| Nightruth - Explanation of the Paranormal - Futatsu dake no Shinjitsu | 1997 | saturn |
| Nightruth - Explanation of the Paranormal - Maria | 1996 | saturn |
| Nightruth - Explanation of the Paranormal 01 - Yami no Tobira | 1996 | saturn |
| Nijuuei | 2002 | dreamcast |
| Nil Admirari no Tenbin - Teito Genwaku Kitan | 2016 | vita |
| NinNinDays | 2020 | switch |
| No Case Should Remain Unsolved | 2024 | switch |
| No Sleep for Kaname Date – From AI: The Somnium Files | 2026 | ps4 |
| Non Casual Encounter - Prologue | 2021 | dreamcast |
| Nonomura Byouin no Hitobito | 1996 | saturn |
| Nora to Oujo to Noraneko Heart 2 | 2019 | vita |
| Norn9 - Last Era | 2015 | vita |
| Norn9 - Var Commons | 2014 | vita |
| Nostalgia 1907 - In North Atlantic Sea | 1991 | segacd |
| Nurse Love Addiction | 2017 | switch, vita |
| Nurse Love Syndrome | 2019 | switch |
| Nurse Love Syndrome | 2019 | vita |
| O.G.A Onigokko Royal - Hunter wa Field de Koi o Suru | 2013 | psp |
| Occultic;Nine | 2017 | ps4, vita, xboxone |
| Oita Beppu Mystery Guide: The Warped Bamboo Lantern | 2022 | ps4 |
| Ojousama o Nerae!! | 1998 | saturn |
| Olympia Soirée: Catharsis | | switch |
| Omerta - Chinmoku no Okite - The Legacy | 2014 | psp |
| Omerta Code - Tycoon Kai | 2016 | vita |
| One Night Stand | 2019 | ps4, switch, xboxone |
| Onigokko! Portable | 2013 | psp |
| Ookami to Koushinryou - Boku to Holo no Ichinen | 2008 | nds |
| Ookami to Koushinryou - Umi o Wataru Kaze | 2009 | nds |
| Or Maybe This Is the Perfect Life | 2025 | genesis |
| Or Maybe This Is the Perfect Life - The Harry Fox Story | 2026 | genesis |
| Ore no Kanojo no Uraomote - Pure Sweet Heart | 2013 | psp |
| Ore no Yome - Anata dake no Hanayome | 2010 | xbox360 |
| Oretachi ni Tsubasa wa Nai | 2014 | ps3, vita |
| Oretachi no Sekai wa Shimatteiru | 2017 | vita |
| Orfleurs - Koufuku no Hanataba | 2017 | vita |
| Osouji Sentai Clean Keeper | 2008 | wii |
| Otoko Yuukaku | | vita |
| Otome-teki Koi Kakumei - Love Revo!! DS | 2008 | nds |
| Ouka Sabaki Zan | 2018 | vita |
| Our World is Ended | 2019 | ps4, switch, xboxone |
| Ouran Koukou Host Club | 2007 | ps2 |
| Ouran Koukou Host Club DS | 2009 | nds |
| Out of Galaxy - Gin no Koushika | 2009 | wii |
| Over Requiemz | 2025 | switch |
| Owaru Sekai to Birthday | 2017 | vita |
| Oyako Entertainment Series - TV Kamishibai Vol. 1 | 1999 | ps1 |
| Ozmafia!! - Vivace | 2015 | vita |
| PC Engine Best Collection - Ginga Ojousama Densetsu Collection | 2008 | psp |
| Pandora no Yume | 2002 | dreamcast |
| Panic-chan | 1997 | saturn |
| Paradigm Paradox | 2021 | switch |
| Parascientific Escape Cruise in the Distant Seas | 2016 | 3ds |
| Parfait | 2015 | vita |
| Parfait Remake | 2021 | ps4, switch |
| Path of Mystery: A Brush with Death | 2024 | switch |
| Period - Cube - Shackles of Amadeus | 2017 | vita |
| Period Cube - Torikago no Amadeus | | vita |
| Persona 4 - The Ultimate in Mayonaka Arena | 2012 | xbox360 |
| Persona 4 Arena Ultimax | 2014 | ps3, xbox360 |
| Petit Novel Series - Harvest December | 2015 | 3ds |
| Phantom - Phantom of Inferno | 2012 | xbox360 |
| Phoenix Wright - Ace Attorney - Justice for All | 2002 | gba, nds, wiiu |
| Phoenix Wright - Ace Attorney - Trials and Tribulations | 2004 | gba, nds, wiiu |
| Phoenix Wright - Ace Attorney Trilogy | 2014 | 3ds, ps4, switch, xboxone |
| PhotoKano - Official Complete Guide | 2012 | psp |
| Pia Carrot e Youkoso!! 3 - Round Summer | 2003 | ps2 |
| Piofiore: Fated Memories | 2019 | switch |
| Planetarian - Chiisa na Hoshi no Yume | 2006 | ps2 |
| Planetarian: The Reverie of a Little Planet | 2019 | switch |
| Plastic Memories | 2016 | vita |
| Plato Protagoras | 2023 | genesis |
| Play Novel - Silent Hill | 2001 | gba |
| PlayStation Comic - Buzzer Beater - Kouhen | 1999 | ps1 |
| PlayStation Comic - Buzzer Beater - Zenpen | 1999 | ps1 |
| PlayStation Comic - Carol the DarkAngel | 1998 | ps1 |
| PlayStation Comic - Space Adventure Cobra - Galaxy Nights | 1999 | ps1 |
| PlayStation Comic - Space Adventure Cobra - The Psychogun Vol. 1 | 1998 | ps1 |
| PlayStation Comic - Space Adventure Cobra - The Psychogun Vol. 2 | 1998 | ps1 |
| Please Be Happy | 2025 | switch |
| Plumbers Don't Wear Ties | 1994 | 3do, ps4, switch |
| Policenauts | 1995 | 3do, ps1, saturn |
| Possession Magenta | 2015 | vita |
| Present for You | 2012 | vita |
| PriministAr | 2016 | vita |
| Prince of Stride | 2015 | vita |
| Princess Ai Monogatari | 2009 | wii |
| Princess Arthur | 2013 | psp, vita |
| Princess Strike! | 2013 | vita |
| Prism Heart | 2001 | dreamcast |
| Prismaticallization | 1999 | dreamcast, ps1 |
| Prison Princess | 2020 | switch |
| Professor Bell's House of Fortune | 2025 | genesis |
| Psychedelica of the Ashen Hawk | 2018 | vita |
| Psychedelica of the Black Butterfly | 2015 | vita |
| PsychicEmotion6 | 2016 | vita |
| Psycho Pass - Mandatory Happiness | 2016 | vita |
| Psycho-Pass | 2015 | xboxone |