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A short deep-sea horror game where you explore a dark and mysterious ocean, photograph strange discoveries, and uncover what lurks beneath the depths.
Price history tracked since Jul 10, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
How it worksTracked since Jul 10, 2026.
Steam Train Fest starts Jul 20, 2026
Official stores with direct support.
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.
Right now the cheapest offer for O2 is CA$5.09 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for O2 is CA$5.09 (recorded on Jul 10, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when O2 drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
