Game category: Action
OS Omega
You are Binary Boy, an agent of OS Omega and your goal is to defeat the virus that wants to format the C drive of the computer you must protect.
OSHIIRO
Swing your glowstick and exorcise! A new kind of horror game!
Osyaberi! Horijyo! Gekihori: Anna Holinski saves the universe, alright?!
Otoko Cross: Pretty Boys Breakup!
Bust some bricks with the boys and earn points to unlock cute crossdressing outfits!
Otokomizu
This jet pack firefighting 3D action game has the most mysterious operation feeling ever!
OTTTD: Over The Top Tower Defence
A Tower Defense/RTS game with RPG elements
Ouija: They are Among us
Our Fantasy Quest
The adventure begins in a fantasy world! Play your way through a variety of quests!
Our Flick Erasers
Flick! Bump! Knock off!
Our Ninja World
Become a shadow warrior in a world of ninjas! Our Ninja World, here we go!