Download and extract from the official Valve developer website.
You can extract files directly from the Steam Workshop using online scraping tools. Browse the public Steam Workshop for The Binding of Isaac. Copy the URL of the mod you want to download. the binding of isaac repentance mods no steam
If a mod is only available on the Steam Workshop, you can use external tools to download the files: Download and extract from the official Valve developer
So go ahead. Launch that GOG copy, drop a few folders into mods , and enjoy the beautiful, bizarre, bottomless world of modded Repentance —no Steam client required. Copy the URL of the mod you want to download
Open your downloaded .zip or .rar file using a program like WinRAR or 7-Zip.
Look for a file named metadata.xml inside the archive. This file is mandatory; it tells the game the mod's name, version, and description.