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Command an advanced submarine in a heart-pounding horror experience as you hunt the last remnants of a defeated enemy beneath the Mariana Trench. Can be completed in under 50 minutes.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Their Navy is Their Doom is a chilling horror game that puts you in command of an advanced combat submarine.
Immersive submarine control through tactile cranks, levers, and buttons.
Navigate treacherous waters, launching torpedoes to obliterate enemy vessels while fighting for survival.
Uncover the terrifying secrets lurking in the ocean's darkest depths .
A concise, intense experience designed to be completed in under 50 minutes.
Plunge into the abyss beyond the Mariana Trench, tasked with eradicating the last vestiges of the Republic's forces.
Over five harrowing days, you'll navigate using sonar and tactical displays, engaging enemy ships in deadly underwater combat.
Due to the experimental nature of your vessel and limited resources, you'll enter cryosleep during descents to uncharted depths.
THE STORY
As Commander Kenji Nagai of the Federation, you stand at the precipice of history.
The Federation has triumphed in the land war, driving the Republic's leadership to flee with their remaining naval forces through a covert passage drilled deep beneath the Mariana Trench. You helm one of the few cutting-edge submarines dispatched to deliver the final blow. To withstand the crushing pressure of extreme depths, you must rely on cryosleep as your vessel auto-navigates the perilous descent.
The fate of the world rests in your hands, Commander Nagai.
Lowest tracked price: CA$3.89 (Jul 7, 2026) · current best: CA$3.89.
100% positive reviews all-time.
Right now the cheapest offer for Their Navy Is Their Doom is CA$3.89 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 Their Navy Is Their Doom is CA$3.89 (recorded on Jul 7, 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 Their Navy Is Their Doom 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.
