Casualties: Unknown Demo

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

Casualties: Unknown Demo is a free Steam demo from Orsoniks. Steam files it under Action, Adventure and Simulation. It supports single-player and runs on Windows. Steam lists the release date as Apr 20, 2026. We first spotted it on Oct 20, 2026.

Type

Steam demo

Status

open

For

Casualties: Unknown

Developer

Orsoniks

Genres

Action, Adventure, Simulation

Platforms

Windows

Release

Apr 20, 2026

First seen

2026-10-20