Otomedius Excellent
Xbox 360
Konami
Otome*Domain
Windows
Otome ga Irodoru Koi no Essence
ensemble
Otome ga Kanaderu Koi no Aria
Otome ga Musubu Tsukiyo no Kirameki
Otome ga Tsumugu Koi no Canvas
Otome Kishi♥Ima Sugu Watashi o Dakishimete
Otome No Himitsu
Rosa Special Studio
Otome no Ken to Himegoto Concerto
WillPlus.
Otome Riron to Sono Shuuhen -Ecole de Paris-
PlayStation Vita, Windows
Navel
Otome Romance Jigsaws - Midnight Cinderella & Destined to Love
macOS, Windows
Otometeki Koi Kakumei Love Revo!!
Windows, PlayStation 2, Nintendo DS
HuneX
Otome wa Boku ni Koishiteru
PlayStation Portable, Windows, PlayStation 2
Otome wa Boku ni Koishiteru: Futari no Elder
PlayStation Portable, Windows
Otona no Onnaryoku Kentei
Nintendo DS
OtterBash
Otter of my Life
OttoMatic
iOS, Windows
Pangea Software
Otto the Odd Ostrich
OTTTD
macOS, Android, iOS, and 3 more
SMG Studio
Otxo
PlayStation 5, Nintendo Switch, PlayStation 4, and 1 more
OU
Nintendo Switch, Windows
OUBEY VR – Cosmic Voyage
Oubliette
Ouija Rumours
Ouka
PlayStation 2, Windows
Ouka Sabaki
Ouka Sengoku! ~Nobunaga-chan no Koishite Yabou!?~
Oulipoems
Oumagatoki
PlayStation
