Casualties Unknown skins

You need BepInEx working first. A skin mod only changes how your character looks and has no effect on game rules.

Which Casualties Unknown skin mod should you use?

These are the main options, with Nexus figures from 9 November 2026. confirmed

Mod	Best for	Downloads	Notes
Multiplayer Sprite Replacer	Co-op	31,240	Last updated 20 June, so it may trail the newest co-op build
Player sprite replacer	Solo or co-op	7,521	Nine slots, numpad, skin menu, wound-view art, updated 5 November
ChangeSkin-Multiplayer	Co-op	9,830	Requires the Krokosha co-op mod; also needed by the host
Skin Deep	Wound screen art	1,053	Custom sprites for the health screen

If you play alone, start with Player sprite replacer. It does not need the core library in single-player. confirmed If you play with friends, install what the group agrees on, because skins only show up for people running a compatible mod.

How do you install a skin?

This walkthrough follows Meow’s guide, one of the most watched on the topic. confirmed

1. Download the skin changer and unzip it.
2. In Steam, use Browse local files, open BepInEx/plugins, and drop the mod’s files in.
3. Launch once. A CustomSprites folder appears in plugins, with folders named 1 to 9.
4. Download a skin. Inside, it should have a file with “body” in the name.
5. Move a slot you do not need into another folder to keep it, then copy your new skin in.
6. Rename the skin’s folder to the slot number you want.

How do you change skins in game?

Press the numpad key that matches the slot. Slot 1 loads automatically in Player sprite replacer, and the mod remembers your last slot on the next launch. confirmed It also has a skin menu if you would rather not use the keyboard.

No numpad?

Change the keybinds. Open BepInEx/config, find the config file for the sprite mod, and swap each slot’s key to something else, like Alpha1 for the 1 key on the top row. confirmed The top-row numbers control time speed in single-player by default, so pick keys you do not use for that. confirmed

How do skins work in multiplayer?

Sync rules depend on the mod, so read its page. Two cases are spelled out. confirmed

• ChangeSkin-Multiplayer: other players see your skin only if they have the mod too, and the host has it, because the host passes skin data between clients.
• Player sprite replacer: each player keeps their own slot and the mod shares the chosen skin. A client joining late receives skins already in the session. The host can lock skins from the menu.

Versions matter here. The author of the Tailor mod noted that ChangeSkinMP 3.1.0 did not work with KrokMP 4.1.2, so a skin mod that worked last month may fail after a co-op mod update. confirmed

Can you change wounds, tails and other body parts?

Yes, with extra mods. confirmed

• Wound view: Player sprite replacer reads a WoundView subfolder for the health-screen art, and Skin Deep also handles this view.
• Tail as a limb: Tailor adds the tail as a 15th injurable limb that also changes jump height, and uses the normal tail sprite, so most skins still fit.
• Species: Gunsaw Genetics adds 14 species, plus albino, with a chooser at the start of a run.
• In-game editing: a community pixel editor on Nexus lets you paint body and head parts with a live preview.

How do you make a custom Casualties Unknown skin?

Start from a template rather than a blank file. Copy an existing skin folder, edit the images at the same pixel size, and keep the file names. Sprite mods look for specific names, so a renamed file will not load, and the author of Player sprite replacer warns that file layouts can change between versions of the game. confirmed

Test your skin alone first. If only part of your character changes, you are usually missing a sprite in that folder, or the file is named differently from what the mod expects.

Will skins work on the full game?

Skins are the mods most exposed to art changes. The full game added two characters and a prosthesis system, so check each mod’s page for a full-release update, and keep a copy of your CustomSprites folder when you reinstall. If you are after more changes than looks alone, see the best mods list.