Mods found outside r2modman need to be installed a certain way, which depends on their mod format.

Supported Formats

If you happen to obtain a mod from somewhere other than Thunderstore, it may be in a format that can be imported directly into r2modman:

If it is one of the above formats, install it via the Import Local Mod button within the Settings menu:

local mod import

Files imported by r2modman are placed into a folder within BepInEx/plugins/ and may use other BepInEx folders as needed, such as Sideloader mods.

Warning

Mods must be formatted a certain way for r2modman to understand them. If a mod is not in a supported format, it cannot be imported directly.

Unsupported Mods

If a mod is not in a supported format, additional work is required.
An unsupported mod may be manually installed or packaged. Manual installation is quicker, but packaging allows r2modman to manage it.