Oasis Road
1999 PS3, PS1, PSP
Olympia Soirée
2020 Switch, iOS, Android
Olympia Soirée Catharsis
2025 Switch
Ore ga Omae wo Mamoru
2009 NDS
Osomatsu-san The Game: Hachamecha Shuushoku Advice - Dead or Work
2017 Vita
Osouji Sentai Clean Keeper H
2009 PS2
Otome Daoshi: Fighting for Love
2024 Switch
Otometeki Koi Kakumei Love Revo! Portable
2010 PSP
Otometeki Koi Kakumei Love Revo!! 100kg Kara Hajimaru Koi Monogatari
2008 PC, PSP
Ouran High School Host Club
2007 PS2
Ouran High School Host Club DS
2009 NDS
Over Requiemz
2025 Switch
Pandora: Kimi no Namae wo, Boku ha Shiru
2010 PS2
Paradigm Paradox
2021 Switch
Period Cube: Shackles of Amadeus
2016 Vita
Petit Four
2008 PS2
Piofiore no Banshou
2018 Vita
Piofiore: Episodio 1926
2020 Switch
Piofiore: Fated Memories
2018 Switch, Vita
Ppoi: Hitonatsu no Keiken
2008 PS2
Princess Arthur
2013 Vita, iOS, +2
Psychic Emotion 6
2016 Vita
Radiant Tale: Fanfare!
2023 Switch
Re:Viced
2014 Vita
Realm of the Dead
2004 PS2
