Casualties: UnknownGuides & Wiki

What this reference covers

Casualties: Unknown is a cave-exploration survival simulator built around a simulated cardiovascular and limb damage system. The official store listing describes a descent through 11 layers on a foreign planet, with robust crafting and 300 items to find on a run. The full game was released on Steam on November 9, 2026 by developer Orsoniks and publisher Oro Interactive. This is an independent, source-backed reference, not an official site, and it does not claim hands-on testing.

Every guide below is written from public sources that were captured locally and cross-checked against at least two different pages or recordings. Where those sources only describe the demo build or a community modification, the page says so rather than presenting it as verified for the current release.

Choose by the problem in front of you

• Learning the systems first: the beginner guide covers training courses, the safest opening layer, crafting from nearby items and what to fix before sleeping.
• Playing with other people: multiplayer setup explains why the store lists a single-player game and what the community co-op mod actually changes; installing mods covers the file steps.
• Staying alive: internal bleeding explains how blood loss is tracked and stabilised, while injuries and revival covers shrapnel, infection, splints and defibrillators.
• Keeping progress: saving and sleeping describes the normal save point and what happens if you quit mid-layer.
• Making things: rope, batteries and scrap metal covers early recipes and item condition, and torches and boiling water covers light, fire and clean water.
• Understanding the run: layers, characters and endings describes the eleven-layer structure, and release date, price and developer collects the launch facts.

What these pages will not do

They will not invent exact damage values, control bindings, prices that change by region, or a guaranteed route to an ending. Community wikis and guide pages describe different builds, and YouTube captions are machine-generated. Anything that could not be confirmed in a written source is left out or marked as unverified, so you can tell the difference between a documented mechanic and a player report.