How to Install Casualties: Unknown Mods on Version 1.0

This is a community procedure, not an official one

Match the mod's target game build, loader and archive instructions before copying files. For Casualties Together, the author's v5.5.0 notes target full-game v1.0 and retain a limited-testing warning. Other plugins need their own compatibility statement; this package's support does not establish theirs. See the author's releases.

Get to the right folder

In Steam, open Library → Casualties: Unknown → Manage → Browse local files. Confirm that you opened the intended full game or demo installation. The game root is the directory beside its executable, where the documented loader is extracted. Sources: the installation guide and author README.

Which loader and package should I use?

The archived Casualties Together README links BepInEx Windows x64 5.4.23.5, and the full-game setup guide names the same dependency. Its v5.5.0 full-game package is MPMod_5.5.0_fullgame1.0_bepinex5.4.23.5.zip. This is a documented requirement for that package, not a universal loader choice for every mod. Sources: README and full-game setup.

Two downloads, then loader initialization

For an ordinary BepInEx plugin, use this documented Windows workflow:

1. Download the loader required by that plugin and the plugin itself.
2. Extract the loader into the game root beside the executable.
3. Launch the game after installing the loader, then close it so its folders can initialize.
4. Check that the expected loader directories exist before placing the plugin.

An unmodified launch before BepInEx is installed cannot perform this initialization. The install-then-launch sequence is described in the Windows demo installation guide; retain that version context when using it for another package.

Place the files

For Casualties Together, open the archive's mod folder and copy its contents, rather than putting the outer folder into plugins or extracting only one DLL. Preserve the package layout. The author README and installation guide distinguish this from ordinary plugin placement.

How do I check the installation?

Launch Casualties Together through Steam and look for multiplayer-related buttons in the main menu. If they are absent, compare the chosen loader, extraction destination and complete mod-folder contents with the package instructions. For ordinary plugins, use that author's stated startup check; multiplayer buttons are specific to the co-op package. See the README and setup troubleshooting.

Before you try co-op

The archived guide separates the full-game v5.5.0 package from a demo v7.0.1 package. The author's older v5.4.0 full-game notes explicitly describe an unfinished port, so an old tutorial is not sufficient reason to select it for release 1.0. Continue to multiplayer setup for co-op version support and character readiness. Sources: package comparison and author releases.

What is not verified

No installation was performed for this guide. General loader initialization comes from a Windows demo workflow; the archived README also still links the demo, while v5.5.0 release notes establish the full-game target separately. Compatibility of additional plugins or later game patches remains package-specific.