569 game(s) starting with letter O

Operate Now: Hospital

Perform challenging surgeries, manage your own hospital, and experience hospital drama in Operate Now: Hospital, an immersive medical simulation experience.

Operation EXP Boost

Operation Hardcore

An action-packed 2D side-scrolling shooter inspired by classic twitchy action games of yesteryear, but with modern touches and conveniences.

Operation Night Strikers

Operation Night Strikers CS Pack

Operation Pig

Protect the pig in this frantic retro arcade game.

Operation Scorpion: Take Down

A single-player FPS game that fights against terrorists around the world! Defeat your enemies and get your weapons! Weapons that excite military fans!

Operation STEEL

Operation Wolf Returns: First Mission

1 cheat

Operation Zeta

Recover parts to your crashed ship from wacky locals to escape a hostile battlefield. Unlock and play as 13 different characters from space monkeys to mischievous slugs.

Operation: Clear Skies

Operation: Hostage Rescue

Gear up. Get in. Get them out!