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O2

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O2 screenshot 1
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O2

Beyond StarZ · Published by Beyond StarZ

Content notice: This game contains horror themes, suspense, darkness, unsettling environments, and frightening imagery. Players may experience tense situations, feelings of isolation, and encounters with mysterious creatures. The game does not contain sexual content, drug use, or graphic depictions of violence.

Last updated 27 Sept 2026

A short deep-sea horror game where you explore a dark and mysterious ocean, photograph strange discoveries, and uncover what lurks beneath the depths.

DJCTQ 10Full Controller Support

£2.65

Lowest price we've ever recorded

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Price history

5 Sept 2026Lowest: £2.65 · Highest: £2.6528 Sept 2026

Adventure, Indie, Simulation · 2026 · More under £5 games

About this game

About This Game

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?

Features

  • 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.

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • OS: 10/11
  • Processor: Any made within the last decade
  • Memory: 1 MB RAM
  • Graphics: Any made within the last decade
  • Storage: 500 MB available space
  • Sound Card: any
  • Additional Notes: You can run this

Supported Languages

English*
*languages with full audio support

Latest news

  • Patch NotesOfficial

    Nightmare Mode Update

    Welcome to the latest O2 update!This update introduces Nightmare Mode, a brand-new way to experience O2 for players looking for a greater challenge. Along with the new mode, we've made various gameplay improvements, fixed bugs, improved performance, and polished the overall experience.
    Read full article on Community Announcements (Top4Tv)
  • Patch NotesOfficial

    Nightmare Mode Update

    Added Nightmare Mode for players seeking a greater challenge. Improved gameplay balance and immersion. Fixed various bugs and performance issues.
    Read full article on Community Announcements (Top4Tv)

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