Casualties: Unknown FAQ
Last updated Unofficial fan guide
Short answers to the questions players ask most, checked against the Steam store, the developer's posts and the fan wikis.
›Is Casualties: Unknown free?
No. The full game costs $22.99 (15% off at launch). The Steam demo (5 of 11 layers) is free, and the old itch.io prototype is pay-what-you-want.
›Is it on mobile?
No. Steam lists Windows only and no source mentions an iOS or Android version.
›Is there multiplayer?
Not officially; it is single-player. An unofficial BepInEx mod called Casualties Together adds co-op.
›How do I install mods and where are they?Not yet confirmed
Mods are mainly on Nexus Mods. Install BepInEx 5.4.23.5 into the game folder (Steam > Manage > Browse local files), launch once, then drop mod .dll files into BepInEx/plugins.
›Where is the save file?Not yet confirmed
Windows: %USERPROFILE%\AppData\LocalLow\Orsoniks\CasualtiesUnknown\save.sv. Proton: steamapps/compatdata/4576490/pfx/drive_c/users/steamuser/AppData/LocalLow/Orsoniks/CasualtiesUnknown. The file is gzip-compressed.
›Does it support controllers?
Steam lists no controller support, and Valve notes the default controller config is not fully functional. Plan on mouse and keyboard.
›Does it run on Steam Deck?Not yet confirmed
Rated Playable by Valve: it performs fine, but controls, glyphs and text size have issues.
›How long does it take to beat?Not yet confirmed
No reliable figure was found (no HowLongToBeat data or developer estimate). Runs are long; the developer added more drill pods because losing hours of progress is painful.
›Is it related to Scav Prototype?
Yes. Scav Prototype was the game's earlier development name on itch.io.
›Are the characters furry?
Yes. You play anthropomorphic creatures; the Experiment is described as a fox, human and rat hybrid, and Rock Paper Shotgun called it "Noita for furries".
›Is it scary or gory?
It is grim and gory: dismemberment, self-harm, drug use and depression are depicted, and it is rated 16+ in Germany and Brazil. There is a censor-pain option.
›Is the demo still updated?
No, the demo stays at 7.0.1.
›How many layers are there?
Eleven: ten main layers plus a short eleventh climb (Crimson Ascent).
›Mac or Linux?
No native versions; Linux users run it via Proton/Wine.