Casualties: Unknown WikiUnofficial field guide
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Treat injuries

Medical & triageBleeding & blood lossInternal bleedingInfection & sepsisFractures, dislocations & shrapnelHeart, blood pressure & strokeBrain damage

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Mood & last standFood, water, heat & sleep

The descent

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Official Steam page

Casualties: Unknown updates and patch notes

Short answer

The latest version is Release 1.0 (November 9, 2026). It added layers 6 to 11, three endings, Milky and Dune, prosthetics, Endless mode, item colours and labels, more run settings and console commands, and 40 achievements. Console commands outside the sandbox now disable achievements. The demo is frozen at 7.0.x.

Applies to Release 1.0 (Nov 9, 2026) Sources checked

Release 1.0 highlights

  • Content: layers 6 to 11, endings, 2 new characters, prosthetics, Endless mode, new traps, more plushies, more E-PDA notes.
  • Quality of life: item colours and labels, opiate and venom on the health panel, a sound cannon indicator, wider attack hitboxes, measurement unit choice, lockpicking kit works from anywhere in your inventory, a liquid-safe area when entering a layer.
  • Balance: hunger and thirst moodles appear earlier, campfires warm more, antivenom and the soothing crystal are buffed, drill pods hurt less, amputation is easier and allowed on healthy limbs, both legs can be lost.
  • Unchipped: no radiation line, shows dislocations and fractures, a different exit sequence.
  • Achievements: certain console commands outside the sandbox disable them.

Full log

: This wiki launched

First version, checked against the 1.0 patch notes, the Steam store page, Steam achievements and the community wiki.

: Release 1.0

Layers 6 to 11, endings, Milky and Dune, prosthetics, endless mode, item colours and labels, more run settings and console commands, 40 achievements. Console commands outside the sandbox now disable achievements. Read the post

: Launch date announced

November 9 at 3pm CET, US$22.99 with a 15% launch discount. The demo stays up but will not be updated. Read the post

: September progress update

10 main layers, an 11th shorter layer and an optional bonus ending sequence. 3 characters, each unlocked by finishing a run with the previous one. Prosthetics in 3 tiers. Read the post

: Simplified Chinese

Official Simplified Chinese translation added to the demo. Read the post

: Demo 7.0

Reworked run settings with presets, pause menu, new jumping, hold Left Ctrl for item labels, E-PDAs give 35 INT XP and blueprints 25. Read the post

: Demo 6.1

First Aid course unlocks at layer 2, Crafting course at layer 3. Fibrillation rises fast only above 280 bpm. Read the post

: Steam reveal and demo 6.0

Reworked cardiovascular simulation, 2 defibrillator types, new heart drugs, reworked tutorial. Read the post

Questions

What is the latest Casualties: Unknown version?

Release 1.0, out November 9, 2026. The developer notes the 1.0 list is incomplete and many small changes are undocumented.

Will the demo be updated?

No, apart from small text fixes and the new E-PDA notes. It stays at 7.0.x.

Sources

Next file

FAQPrice, platforms, Steam Deck, controller, demo, length and content warnings.All 11 layersEvery layer from Gravel lands to Crimson Ascent, with temperatures and threats.