And if you do edit? Backup your original save. Name it mr_mine_backup_original.txt . Keep it safe. Because once you descend into the edited abyss, you can never truly go back. Disclaimer: This article is for educational purposes. Modifying game files may violate the Terms of Service of some platforms. Always respect developer intent and other players' experiences.
Find a reputable (or at least functional) editor online. If none exist, you can use a generic Base64 decoder (like base64decode.org ) and edit the JSON manually. mr.mine save editor
Use a save editor if you have already experienced the game's natural arc and wish to skip to unreleased or theoretical content. If you are on your first playthrough, resist the urge. The climb through the earth, from copper to titanium to dark matter, is the actual game. The save editor is not a shortcut; it is a different game entirely—one about data manipulation rather than mining. And if you do edit
In Mr. Mine, go to Settings -> Save -> Export. Copy the long string to your clipboard. Keep it safe
When you click "Export Save" in the game’s settings, you receive a long string of seemingly random characters. This is encrypted, but it is encoded —typically in Base64, sometimes with additional compression (like LZ-string). The structure looks like this: