The R.E.P.O. modding scene centers on the Thunderstore repository, utilizing BepInEx for installation via tools like r2modman or Thunderstore Mod Manager. Key modifications include added enemy variety, new utility tools, and extensive cosmetic options, with most requiring consistent installation across all players for multiplayer compatibility. For a visual guide to the installation process, watch this video from YouTube . 2 other ways to Mod R.E.P.O. – Step-by-Step Guide!