
A short deep-sea horror game where you explore a dark and mysterious ocean, photograph strange discoveries, and uncover what lurks beneath the depths.
Modeled estimate, not a reported figure. How we estimate →
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About
O2 is a deep-sea horror exploration game where every breath matters.
You descend alone into the dark depths of an unexplored ocean. Armed with only a camera, a map, and a limited oxygen supply, your mission is simple: locate designated coordinates and capture photographic evidence of what lies below.
As you venture deeper, the ocean becomes increasingly hostile. Visibility fades, strange sounds echo through the darkness, and something unseen may be watching from beyond the reach of your light.
Manage your oxygen carefully as you navigate the abyss. Every photograph brings you closer to completing your mission, but also drains valuable resources needed to survive. Getting lost, running out of oxygen, or lingering too long in the darkness can turn a routine expedition into a desperate fight for survival.
Will you uncover the secrets hidden beneath the waves, or become another lost soul swallowed by the deep?
Explore a dark and mysterious underwater world
Complete photography objectives at designated coordinates
Manage a limited oxygen supply
Navigate using a map and compass system
Atmospheric deep-sea horror and tension
Immersive first-person exploration
Uncover the mysteries hidden in the abyss
The deeper you go, the less alone you feel.
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Reviews
This was a good horror game and kept you wondering what was coming in the darkness. I would definitely recommend
As a person deathly afraid of the ocean I found one mission point & had to stop. It was a picture of a group of fish but hearing the voice nearly killed my a**. 10/10 gives me old school Slenderman vibes but with better/more interactive gameplay. If you can handle immersive horror this is for you. If you're a cry baby like me and want to test your might- this is ALSO for you.
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Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Languages: English**languages with full audio support
Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.
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