For developers or advanced users, the es3-modifier on PyPI offers a programmatic way to handle these files. It is designed to: files using a known password. Modify specific data keys. Re-encrypt the file for use back in the game. How to Edit Your Save Files
By default, Unity stores these in the persistentDataPath . You can find this in-editor by going to Tools > Easy Save 3 > Open Persistent Data Path . save editor es3