Casualties: Unknown launches Nov 9: price, layers, patch notes
Casualties: Unknown is out on Steam: $22.99 with a 15% launch discount, 11 layers, 3 endings, 40 achievements, 1.0 patch notes and PC specs.
- Full 1.0 release on Steam: November 9, 2026, 3pm CET
- Price: $22.99 with 15% launch discount ($19.54 on Steam at time of writing)
- 11 layers, 3 endings, 3 characters, 40 achievements
- Windows 10 minimum, Intel Core i3-8130U, 500 MB storage
- Developer Orsoniks, publisher Oro Interactive
Casualties: Unknown is out now on Steam. The full 1.0 release of the cave-exploration survival simulator went live on November 9, 2026, after nearly three years of development by solo developer Orsoniks, and it is priced at $22.99 with a 15% launch discount, which put the Steam price at $19.54 at the time of writing. Here is what the full game adds over the demo, what the 1.0 patch notes list, and what your PC needs.
What the full game adds over the demo
The Steam store page describes the game as an unforgiving cave-exploration survival simulator in which captors send you to retrieve lost cargo on a foreign planet, and you are "just one of the thousands of test subjects sent to die". The pitch rests on a fully simulated cardiovascular and limb damage system: you bandage wounds, fight infections, stabilise blood loss before you faint, and manage a mood that affects your survival odds.
According to the developer's launch post, the full game has twice as many layers as the demo, 40 Steam achievements, multiple characters and endings, and a long list of quality-of-life fixes. The release announcement lists layers 6 to 11, three separate endings, three separate characters and balance changes. The demo stays on Steam but will not be updated, apart from typo fixes and the new ePDA text.
1.0 patch notes highlights
The developer cautions that the 1.0 notes are incomplete because many smaller changes are not documented. The listed additions include:
- Layers 6 to 11 and endings. The September progress update says there are ten main layers, a shorter eleventh layer and an optional bonus ending sequence.
- Two new playable characters. You unlock them by finishing a run with the previous character.
- Endless mode and more run settings, plus extra console commands (using certain commands outside the sandbox disables achievements).
- Prosthetics. Losing a limb is no longer permanent, and you can now have both legs amputated.
- New traps, plushies, item customisation and a switch between measurement units.
Balance and comfort changes are extensive too: attacks use a wider hitbox, guns are more controllable, the amputation minigame is less punishing and can be done on non-infected limbs, the lockpicking kit works from anywhere in your inventory, and there is now a liquid safety area around the player when entering a new layer. Some brain damage effects only trigger as your brain health drops further, and the Elder no longer instantly retargets you if you hit it during its cooldown.
Orsoniks says the game "should be a little bit easier as a whole" than the demo, with clearer trap telegraphing and less debilitating injuries, but it is still described as unforgiving.
Price, bundles and PC requirements
The launch announcement gives a base price of $22.99 with a 15% launch discount and regional pricing. Bundles pair the game with Rain World, Palworld, Barotrauma and Abiotic Factor, and the soundtrack, which the developer says runs over three hours with more than 50 tracks, is sold separately and in a game-plus-OST bundle.
| Spec | Minimum |
|---|---|
| OS | Windows 10 (64-bit) |
| Processor | Intel Core i3-8130U 2.20 GHz |
| Storage | 500 MB |
| Display | 16:9, 16:10 and ultrawide supported |
| Languages | English, Simplified Chinese |
It is single-player and Windows-only on Steam, with Family Sharing enabled. If you want a different kind of survival loop, our Subnautica 2 beginner guide covers a co-op alternative.
How it got here
The reveal and demo launched earlier, followed by demo updates that added difficulty modifiers, settings and item labels, and a Simplified Chinese localisation. The release date was announced for 3pm CET on November 9. In the launch post Orsoniks thanks the community and says the project took the last three years.
Expect updates and hotfixes in the days ahead as the community reports bugs on the developer's Discord, and follow the game's Steam news feed for the official word. Our Casualties: Unknown hub will collect guides, and the news hub has the rest of the day's stories.
FAQ
When did Casualties: Unknown release?
The full 1.0 version launched on Steam on November 9, 2026 at 3pm CET.
How much does Casualties: Unknown cost?
It is $22.99 with a 15% launch discount, shown as $19.54 on Steam at the time of writing, with regional pricing and bundles available.
How many layers and endings does it have?
There are 11 layers, three endings and three playable characters, plus an optional bonus ending sequence mentioned in the developer's September update.
Does the demo get updated?
No. The demo stays up but will not be updated beyond small text changes.
Sources: the game's Steam store page and the developer's launch posts on the Steam news hub.
How we got here
- Oct 2026Launch date announced for November 9 at 3pm CET
- Nov 9, 2026Version 1.0 releases on Steam with layers 6-11 and endings
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