At a glance
The short version
- Game
- Casualties: Unknown
- Guide type
- Beginner's Guide
- Read time
- 5 min read
- Last updated
- Nov 7, 2026
Quick answer
99, with a 15% launch discount.
Guide details
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| Item | Details |
|---|---|
Release date | November 9, 2026 |
Price | $22.99, with a 15% launch discount |
Platform | PC (Steam), single-player |
Demo | Live since April 20, 2026; covers the first 5 of 11 floors |
Demo players | 500,000+ |
Demo reviews | Overwhelmingly Positive, 96% of 4,500+ English reviews |
Wishlists | 360,000; No. 7 on the November wishlist chart |
Developer / Publisher | Orsoniks / Oro Interactive |
What is Casualties: Unknown?
Casualties: Unknown is a top-down survival game set in procedurally generated underground caves. The full game has 11 floors to descend, three playable characters with their own attributes and traits, and multiple endings. Your goal is to retrieve lost cargo, known as The Grey Planet.
Survival here is physical, not just a health bar. The game simulates limbs and the cardiovascular system, so injuries have to be treated wound by wound, and blood loss is tracked. Hunger and thirst matter too, and supplies found underground are limited, so resource management runs through every descent.
The demo: what you can play now
The demo covers the first 5 of the game's 11 floors, so it shows the core loop: descend, search, manage hunger and thirst, treat injuries, and get back out. More than 500,000 players have tried it, and the demo's Steam reviews sit at Overwhelmingly Positive. That is the material every guide on this page is built from.
Guides in this hub
Beginner's Guide (Demo): survive your first descent, learn the radial inventory, and manage hunger, thirst and injuries.
Injury and Medical System Explained (Demo): limbs, blood loss, bandaging, shrapnel removal, and the drugs in the combat pen.
After launch on November 9, 2026, this hub will grow: full walkthrough, boss, ending and collection guides, written from the full game.
Release info
Casualties: Unknown launches November 9, 2026 on Steam for $22.99, with a 15% launch discount. It is a PC single-player game, developed by Orsoniks and published by Oro Interactive. The demo remains free to try on the Steam store page.
FAQ
When does Casualties: Unknown release? November 9, 2026, on Steam, for $22.99 with a 15% launch discount.
What does the demo cover? The first 5 of the game's 11 floors. Everything in this hub is written from that demo.
Will these guides be updated after launch? Yes. The full game may change systems, numbers and content, and this hub will be updated with guides written from the full game.
Bottom line: try the demo first. It covers the first 5 floors, it is free, and more than 500,000 players have already played it. Start with the beginner guide below, and read the medical explainer before your first serious injury, not after. This hub will grow once the full game launches on November 9, 2026.