Casualties: Unknown is an unforgiving cave-exploration survival simulator. Your captors have tasked you with retrieving lost cargo on a foreign planet, explore its 5 layers and do your best to survive diverse hostile environments. You are just one of the thousands of test subjects sent to die.
About Casualties: Unknown Demo
In this demo you can play 5 out of the 11 layers of the game with the full features and current mechanics of the game.
Survive a Harsh World
Each layer brings own challenges, adapt and descend.
Simulated Limb and Cardiovascular Systems
Injuries are unavoidable. You will have to bandage yourself, fight infected wounds, and stabilize blood loss before losing consciousness. Additionally, your mood can greatly affect your chances of survival, too much doom and gloom will make your life harder.
Craft to Survive
Genres and features
ActionAdventureSimulationSingle-player
Common questions
Is it really free?
Yes. Casualties: Unknown Demo is free right now on Steam, with nothing to pay.
Is this the full game?
No. A demo is a portion of Casualties: Unknown Demo — usually the opening section — published so you can try it. It is free permanently, but it is not the complete game.
Where do I claim it?
On the official Steam page. We link straight there — we never host game files or act as a middleman.
More demos on Steam
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| Ends 31 December 2026 at 23:59 UTC |
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