REPO Game Mods: How to Install & Best Mods

The easiest way is Thunderstore Mod Manager. Install the manager, create a R.E.P.O. profile, then install BepInExPack first since it is the loader every mod relies on. After that, click "Install with Mod Manager" on any mod you want from the Thunderstore R.E.P.O. database and launch the game with "Start modded". The manager handles dependencies and keeps mods separate from your clean Steam files, so removing them is as simple as launching from Steam again.

BepInEx is a general-purpose modding framework for Unity games, and R.E.P.O. is built on Unity, so it is the foundation almost every mod uses. Yes, you need it: gameplay and quality-of-life mods are loaded by BepInEx at startup, and without it they simply will not run. If you use a mod manager, BepInExPack installs in one click; if you install manually, you extract its contents into the game folder so a BepInEx console appears when you launch.

Download the BepInExPack archive, extract it, and copy the contents of the inner BepInExPack folder into your R.E.P.O. game directory (where the .exe lives) so the BepInEx folder sits next to it. Launch the game once to confirm the BepInEx console opens. Then place each additional mod’s DLL into BepInEx/plugins. Manual installs work but you manage dependencies and updates yourself, which is why most players prefer a mod manager.

It depends on the mod. Cosmetic or client-side mods only affect your own game and need no coordination. Gameplay mods that change rules — player count, difficulty, shared upgrades — usually need to be installed by the host, and often by every player, to work properly and avoid desyncs. Always read a mod’s description for its multiplayer notes, and make sure everyone in the lobby runs the same mod versions on the same game build to stay compatible.

Mods from Thunderstore and Nexus Mods are community-vetted and widely used, and R.E.P.O. is a co-op game without competitive anti-cheat, so ban risk from normal mods is low. That said, all mods are third-party software you install at your own risk: only download from reputable sources, keep your BepInEx and mods updated, and back up your save first. If a mod causes crashes, remove it and launch vanilla from Steam to confirm the base game is fine.

Both are popular. Thunderstore is the most convenient for R.E.P.O. because it integrates directly with Thunderstore Mod Manager for one-click installs and automatic dependency handling. Nexus Mods also hosts many R.E.P.O. mods and works through its own app. Either way, stick to these established platforms rather than random download links, since reputable hosts moderate uploads and show version, dependency, and update information you can trust.

R.E.P.O. is in early access and updates often, which can temporarily break mods built for the previous version. When that happens, open your mod manager and update each mod, since authors usually patch quickly. If a mod has not been updated yet, disable it until a fix lands. You can also roll the game back to a prior build through Steam’s beta branches if a key mod is not yet compatible, but the simplest fix is usually to wait for the mod update.

If you used a mod manager, just launch R.E.P.O. directly from Steam instead of "Start modded" — the modded profile is kept separate, so the Steam launch is fully vanilla. To remove mods entirely, delete them from the manager profile. For manual installs, delete the BepInEx folder and the related loader files from the game directory, or use Steam’s "Verify integrity of game files" to restore a clean install.