About Casualties: Unknown Guide
Last updated Unofficial fan guide
Casualties: Unknown Guide is an unofficial fan guide to Casualties: Unknown, the cave-diving survival game by Orsoniks on Steam. It is run by one person, Guo Yetao, and started on 2026-11-14.
Not affiliated
This site is not made by, endorsed by or affiliated with Orsoniks (the developer of Casualties: Unknown), its publisher Oro Interactive, or Valve. Game names and terms belong to their owners and are used here only to describe the game. You can buy the game or try the free demo on the Steam store page.
Where our information comes from
We start with official sources: the Steam store page and the developer's news posts and patch notes. Item and recipe data comes from the two fan wikis, which extract it from the game files, and we compare the two against each other. Every page is written in our own words.
How we mark uncertain details
Anything we could only find in one source is marked "Not yet confirmed". Some advice was written for the free demo, before the 1.0 release; it is marked "From the demo; may have changed in 1.0". Our facts were last checked against game version 1.0.2.
Images
The logo and artwork on this site are our own. We don't use the game's logo, art or screenshots.
Found a mistake?
Tell us on the contact page. We fix confirmed errors within 24 hours.