The Eternal Cylinder
Released Oct 2022
Control a herd of charming creatures called Trebhum and explore an unforgettable alien world filled with exotic lifeforms and surreal environments. Discover dozens of mutations to overcome puzzles, explore new biomes, and survive on a dangerous planet.
89% positive · 1,279 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam $24.99
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Evaluation
The Eternal Cylinder launched on Steam on October 13, 2022, accompanied by the Anniversary Update — a substantive content drop that added new creatures, a mutation improvement, and graphical upgrades. Following launch, the developer released three bug-fix patches in October 2022 to address technical issues, and then released the game's soundtrack for free on December 22, 2022 as a holiday gift to the community. The December post also briefly mentioned a console quality-of-life update, which is the last meaningful developer communication on record.
There is no evidence of any post-launch content roadmap, unshipped DLC, planned expansions, or developer statements indicating further content is in development. The only DLC listed on the store is the soundtrack, which has been released. The news history shows no major content updates after the launch day Anniversary Update, and developer communications ceased entirely after December 2022. With no sustained pattern of post-launch content updates and no outstanding commitments, the game appears to have launched as a complete, finished product — the Anniversary Update was the culmination of post-console-launch development, delivered on day one of the Steam release.
Evidence
The Eternal Cylinder launched on Steam with the Anniversary Update included, adding two new creatures, a mutation improvement, and 4K/60fps ray tracing support. This was the major content milestone for the Steam release.
Developer released the game soundtrack for free as a holiday thank-you. Mentioned a console quality-of-life update coming the next day. This is the last known developer communication.
Content
1 of 1 released · no outstanding content
Media
Details
Developer
Publisher
Good Shepherd Entertainment
Achievements
12
Platform
Windows
Controller
full support
Steam Deck
Unsupported
Players
Single-player
About this game
You were born on a dangerous planet. Surreal and fantastical environments, teeming with exotic creatures that defy description. This world is both terrifying and awe-inspiring, as full of wonder and mystery as it is dangerous. But whatever dangers can be found pale in comparison to this world’s biggest threat: The Cylinder. This gargantuan, ancient rolling structure crushes everything in its path. But where did it come from? And how can it be stopped?
In this place, you are but a tiny creature called a Trebhum. While you may not be the fastest or the strongest, you have the most powerful ability of all: adaptation. Trebhum can mutate and evolve new physical attributes and abilities that can help them defend themselves against predators and navigate through this perilous world; what you lack in size, you’ll need to make up for in improvisation and resourcefulness. So, prepare yourself, little Trebhum. Gather your family for the dangerous journey ahead and save your world from The Eternal Cylinder.
An unforgettable alien world to explore…
A vast, open world that contains four unique biomes, each filled with extraordinary flora and strange fauna. What wonders, or horrors, lie ahead will surely be unforgettable.
…with real-time world destruction.
Every time The Cylinder roars to life, more of your beautiful planet is crushed under the weight of the ancient destroyer. Trees fall creating obstacles to escape while hills and mountains are flattened leaving nowhere to hide. Your only chance of survival is to run!
Build Your Own Alien Family
Each Trebhum can choose from 50+ mutations that give them the ability to grow spikes, shoot tornadoes, fly, and more! This allows Trebhum various methods to overcome any obstacle they face! Additionally, each mutation gives Trebhum unique appearances, meaning Trebhum herds become a diverse cast of lovable creatures customized for ultimate survivability.
Solve Ancient Mysteries
In hidden sanctuaries, built by generations past and protected by complex puzzles, is the ancient knowledge passed down from generation to generation of Trebhum. Seek these sanctuaries out for they house the only hope your world has left.
Watch out for The Cylinder’s servants
Servants are abominations created by The Cylinder; infesting, destroying, and consuming every natural thing on the planet, leaving nothing behind. Stay as far away from these monsters as you can!
*ANNIVERSARY UPDATE - NEW CONTENT*
New Creatures to Discover!
2 new creatures now roam the world - Approach at your own risk!
- The Buddugh Gropp is a highly aggressive herbivore found in tundra biomes.
- The Gharukuk is a large tripodal omnivore found in the desert.
A new mutation!
Trebhum have developed a new, fiery mutation allowing them to shoot jets of flame from their trunks. The ability makes sure that any would-be predator knows that Trebhum may be too spicy for food (especially for those with fur!)
New graphics options!
The Eternal Cylinder now supports 4K AND ray tracing make your journey to salvation the most vivid and immersive ever! Enjoy this gorgeous world the way it was meant to be seen, even more vividly!
In this place, you are but a tiny creature called a Trebhum. While you may not be the fastest or the strongest, you have the most powerful ability of all: adaptation. Trebhum can mutate and evolve new physical attributes and abilities that can help them defend themselves against predators and navigate through this perilous world; what you lack in size, you’ll need to make up for in improvisation and resourcefulness. So, prepare yourself, little Trebhum. Gather your family for the dangerous journey ahead and save your world from The Eternal Cylinder.
An unforgettable alien world to explore…
A vast, open world that contains four unique biomes, each filled with extraordinary flora and strange fauna. What wonders, or horrors, lie ahead will surely be unforgettable.
…with real-time world destruction.
Every time The Cylinder roars to life, more of your beautiful planet is crushed under the weight of the ancient destroyer. Trees fall creating obstacles to escape while hills and mountains are flattened leaving nowhere to hide. Your only chance of survival is to run!
Build Your Own Alien Family
Each Trebhum can choose from 50+ mutations that give them the ability to grow spikes, shoot tornadoes, fly, and more! This allows Trebhum various methods to overcome any obstacle they face! Additionally, each mutation gives Trebhum unique appearances, meaning Trebhum herds become a diverse cast of lovable creatures customized for ultimate survivability.
Solve Ancient Mysteries
In hidden sanctuaries, built by generations past and protected by complex puzzles, is the ancient knowledge passed down from generation to generation of Trebhum. Seek these sanctuaries out for they house the only hope your world has left.
Watch out for The Cylinder’s servants
Servants are abominations created by The Cylinder; infesting, destroying, and consuming every natural thing on the planet, leaving nothing behind. Stay as far away from these monsters as you can!
*ANNIVERSARY UPDATE - NEW CONTENT*
New Creatures to Discover!
2 new creatures now roam the world - Approach at your own risk!
- The Buddugh Gropp is a highly aggressive herbivore found in tundra biomes.
- The Gharukuk is a large tripodal omnivore found in the desert.
A new mutation!
Trebhum have developed a new, fiery mutation allowing them to shoot jets of flame from their trunks. The ability makes sure that any would-be predator knows that Trebhum may be too spicy for food (especially for those with fur!)
New graphics options!
The Eternal Cylinder now supports 4K AND ray tracing make your journey to salvation the most vivid and immersive ever! Enjoy this gorgeous world the way it was meant to be seen, even more vividly!
Are these done yet?
Last evaluated Jun 27, 2026
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