How do I force close a preview?

My game preview stuck on full screen and large progress have been made. Is there a shortcut key to force close the preview window without closing the entire GDevelop editor?

Not that I’m aware of. You could use task manager to close the preview window, remove the set to full screen action, or add an event the checks if the esc key is pressed, and either exits full screen mode or quits the game/.

If it’s a preview, Alt+F4 should work just fine.