Bottom Panel: Versions
The Versions tab shows the history of saved versions of your game and lets you restore an earlier one. This is the editor's built-in safety net, comparable to version control in software development or the version history features built into engine project workflows.
What it shows
Every time you save, a version is recorded. The Versions tab lists these previous versions so you can see the history of your game's development.
Restoring a version
If a set of changes doesn't work out, you can restore an earlier version, rolling the game back to how it was at that point. This is a stronger safety net than undo: while undo steps back through recent actions in the current session, version restore lets you return to any previously saved state.
How to use it
Save at meaningful milestones — after completing a level, getting the feel right, or finishing a round of asset work — so you have clear points to return to. Then experiment freely, knowing that if an experiment goes wrong, you can restore a known-good version. This "save a good state, then experiment" habit is exactly how developers use version control to work without fear of losing progress.