How to Install Mods on an Abiotic Factor Server

Abiotic Factor mods generally use one of two formats:

Mod type	Archive contents	Installation directory
PAK	.pak files, sometimes with .utoc and .ucas files	AbioticFactor/Content/Paks/
UE4SS	a mod folder containing a Scripts directory	requires a dedicated server configuration

Read the mod description before installing it. The author should specify game-version compatibility, dependencies, and whether the mod is needed on the server, player clients, or both.

Install a PAK mod

1. Download the mod, for example from Nexus Mods, and extract it on your computer.

2. Stop the server in the Mikasa Host panel.

3. In Files, open:

   AbioticFactor/Content/Paks/

4. Upload the .pak files. If the archive includes matching .utoc and .ucas files, upload those too.

5. Start the server.

Do not create an extra nested folder unless the mod author specifically requires one: the files must be directly inside Paks.

What about UE4SS mods?

UE4SS is a loader for script-based mods. These mods commonly include a Scripts directory and require more than the mod files: a version.dll loader beside the server executable and a special Proton launch override.

UE4SS mods require additional server-environment configuration. If a mod archive contains a Scripts directory, contact Mikasa Host on Discord before installing it to confirm the appropriate installation method for that mod.

If a mod does not work

• Match the server game version with the version supported by the mod.
• Install every dependency listed in the mod description.
• For a PAK mod, make sure every file from the archive was uploaded to Paks.
• Add mods one at a time to identify conflicts.
• Check the server console: the final log lines commonly name the mod or file causing the problem.

After an Abiotic Factor update, a mod may need an update from its author. If the server stops starting after a mod installation, disable the last mod you added and try again.