Mouse

One Lonely Outpost

Indie , Simulation

Action

Onimusha: Warlords

Action

Operencia: The Stolen Sun

Action , Exploration , Indie , Roleplaying

Opus Magnum

Indie , Simulation , Puzzle

Action , Exploration , Indie

Orcs Must Die! Deathtrap

Action , Indie , Strategy

Oriental Empires

Indie , Strategy , Simulation

Original Journey

Action , Exploration , Indie , Roleplaying

Exploration , Indie , Simulation

Outbreak Island

Action , Exploration , Indie , Roleplaying , Simulation

Outcast - A New Beginning

Action

Outland

Action , Exploration , Indie , Arcade , Platforming

Action , Shooter , Multiplayer

Outpost: Infinity Siege

Action , Shooter , Strategy