Holosim automatically creates a background account when you start playing, but you’ll need to save your game once to make sure you can always come back to it.
How to save your progress:
Open the Settings menu: click the cogwheel icon in the top-right corner of the screen.
Click “Save Game”: this will download a small JSON file to your device.
Keep this file safe: the file contains your secret key, which is required to restore your Holosim profile.
Do not share it with anyone.
Store it somewhere secure, just like a password.
Once you’ve downloaded your save file, you don’t need to repeat the process again. As long as you keep the file safe, you can always restore your progress on another browser or device.