Outbreak Island: Pendulum
Released Aug 2022 · delisted
Mysterious island, crashed plane, underground complex, classified military research. Survive in a new atmospheric sandbox thriller and uncover the terrible secret of the disaster.
60% positive · 654 reviews
Not yet
Removed from storefront
High confidence
Not yet
Removed from storefront
High confidence
Where to buy
Steam
Can't confirm — worth a look
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Evaluation
Outbreak Island: Pendulum was a free prologue/demo version of the main game Outbreak Island, released on August 22, 2022. It is no longer available for purchase on Steam — the store page has no purchase options.
This closure was actually announced in advance by the developer. On November 24, 2022, the developer posted that the game would be "closed for quarantine" — explicitly stating that the page would no longer be available to new players, while existing owners would retain access to the previous version. The developer framed this as a transition, directing players toward the main Outbreak Island game instead.
The most recent news post associated with this store page (October 29, 2025) announces the Early Access launch of the main Outbreak Island game (a separate Steam product, App ID 1442530), which is the evolved successor to this free prologue. This confirms the developer's studio is still active and has moved on to the full game, but Outbreak Island: Pendulum itself has been removed from sale as intended.
Evidence
Developer announced the game would be closed and its store page made unavailable, with future content to appear in the main Outbreak Island game instead. Existing players would retain access to the prior version.
No purchase options are available — the game cannot be acquired on Steam.
Media
Details
Developer
Publisher
HypeTrain Digital
Achievements
—
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player
About this game
Welcome to Outbreak Island: Pendulum, a free version of the open-world survival simulator Outbreak Island.
After a mysterious experiment, the entire population of Erlsen Island goes crazy and declares a hunt for the survivors. The authorities isolated the region from the outside world and classified the "incident". Now a Center for Advanced Studies in a former nature reserve is becoming a dangerous place, where ominous green radiation shines in the sky at nights.
Face-to-face with the horrifying consequences of Project Pendulum, start your survival journey as experienced detective Howard Chapman, who secretly arrived on the island to investigate the causes of the disaster.
Survive
With nowhere to retreat, there is a whole island ahead, full of secrets and dangers. Survive by fortifying and equipping your base to ward off the attacks of the Transformed.
Collect resources and craft useful tools, equipment, weapons - they will grant you a chance to hold out more than one night. And when the next day comes, it's time to think of a survival strategy - attack enemies or use stealth to avoid them, stock up on food or even grow your own!
Explore a living open world
The outside world is full of threats and obstacles to overcome. Survival in conditions of limited resources can be a real challenge even for a veteran detective.
Even nature is challenging you with thick fog, heavy rains and aggressive wild animals. And the distraught inhabitants of the island are preying on you at night!
Do your own investigation
By being in the right place at the right time, you will be able to discover secrets of the island that are hidden for most explorers. Use your camera to collect clues and secret files that will shed light on what is happening, and put the disaster puzzle together.
Find the underground research facility and get ready to discover the biggest secret of the island!
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Last evaluated Jul 16, 2026
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