Oxygen: First Breath

(06/10/2022)

• Singleplayer
• Strategy
• Survival
• Building
• Sandbox
• Indie

This is a free version of Oxygen, featuring the first 50 game-days. Build your city around the Oxygen Center and ensure your people's survival in a post-apocalyptic future, threatened by crack explosions, deadly winds, droughts and frosts. Lead your people and keep the Oxygen Center running!

Oxygen Not Included

(29/07/2019)

• Adventure
• Singleplayer
• Strategy
• Multi-player
• Open-World
• Survival
• Building
• Sandbox
• Indie

Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.

Oxyjet

(30/11/2022)

• Action
• Casual
• Arcade
• PvP
• Co-op
• Sports
• E-Sports
• Remote-Play

Fly your spaceship by making holes in it! Oxyjet is a ridiculous and action packed couch co-op game, in which you "sumo wrestle" the opposing team for oxygen.

Oxytone

(21/11/2023)

• Casual
• Singleplayer
• Strategy
• Puzzle
• Board-Game
• Remote-Play

Relax and listen to the hypnotizing world of Oxytone, slow paced puzzle game where you rotate hexagonal tiles with paths. Each tile can be used up to six times, creating tangled paths.

Oyabu Clinic Deathcare Corporation

(31/08/2023)

• RPG
• Simulation

Alchemy with patients' lives and health insurance! A quack doctor simulation game. DON'T imitate any of this!

OYASUMII

(06/03/2025)

• Adventure
• Singleplayer
• Puzzle
• Survival

Relive the nostalgia with OYASUMII, a horror and exploration game inspired by PSX and N64 classics. Enter liminal spaces and face surreal terrors in an adventure that challenges your skills and sanity. Are you ready to relive the golden age of video games with OYASUMII?

OyasumiVR - VR Sleeping Utilities

(12/09/2023)

Software that helps you sleep in virtual reality. OyasumiVR detects when you are asleep and automates various tasks and settings to make VR sleeping as comfortable as possible.

Oylinder

(22/11/2022)

• Arcade
• Platformer

A 3D platformer like you've never seen before, you must climb a mountain, by controlling a ball with six legs, a key for each leg, jump, roll and fall until you have mastered it. If you seek a challenge, this is it.

OZ Chord Player

(01/05/2022)

OZ Chord Player is a very simple tool for playing chords. When composing with Computer Music, you can easily find and try chords that match your melody. You can easily check the sound of chords with OZ Chord Player even if you don't have an instrument.

Ozapell Basic

(22/10/2017)

Ozapell Basic is a hobbyist programming language simple enough for new programmers -- while powerful enough to develop playable retro 1980s games.

Ozapell Mystery Text Adventure

(31/03/2019)

• Adventure
• Casual
• Early-Access
• Indie

A retro early 1980s text adventure experience involving a murder mystery that is generated differently each time the game is played.

OZMAFIA!!

(28/04/2016)

• Adventure
• Singleplayer

Once upon a time, a girl, her pet dog, and three companions made a journey to meet a great wizard who could grant their wishes. But what if the girl hadn’t believed that “there’s no place like home”? Explore a fairytale world through a dozen routes and 20+ endings!