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Backing up your game

However your game is stored, it exists in exactly one place until you make a copy of it somewhere else. That matters more than it sounds like it should - an accidental delete, a script change you regret, or a browser/disk problem can lose you real work, and none of it is as recoverable as you might expect.

If you didn’t pick a folder when you created your game, it’s stored inside the browser itself - not as a file you can find and copy. That storage can be cleared by a “Clear browsing data” cleanup, a browser reinstall, running in a private/incognito window, or just running low on disk space, and none of those give you any warning it’s about to happen.

Backup…, in the File menu, downloads a .zip of your game and its assets that you can import again later with Open a game file…. It’s not automatic - you have to remember to do it - so the editor reminds you every so often with a banner at the top of the screen. Don’t dismiss it without backing up at least occasionally.

Keep more than just the latest one. If you only ever keep a single backup and overwrite it each time, you can back up moments after breaking something and still have no way back to how the game was before. A dated .zip every so often - after finishing a room, before a big change - costs almost nothing and means you can always get back to a recent working state, not just the most recent one.

If your game is an ordinary file on disk - the desktop app always saves this way, and so does “Save to folder…” in a browser that supports it - it survives all of the above, because it isn’t tied to any one browser or browser profile.

That’s not the same as being safe from you, though. The editor’s own Undo button only reverses edits made in your current session - close the game and reopen it, and that history is gone.

So if you delete an object, rewrite a script, or make some other change you later regret, and you’ve saved since, the one copy of the file on disk is the only one that exists. Treat it like anything else on your computer you’d be unhappy to lose:

  • Keep dated copies every so often, the same as for a browser draft - copy the .aslx file (and its folder, if it has one) somewhere else before a big change.
  • A folder that syncs to the cloud (Dropbox, OneDrive, iCloud Drive, and similar) protects against a lost or damaged disk, and some of them keep old versions of a file you can restore from.
  • If you’re comfortable with version control, a tool like Git works well here - .aslx is plain text, so it diffs and commits cleanly, and you get a full history you can step back through and compare, not just your last few copies.