Oh no! Mind telling me what happened so I can hopefully prevent that in the future? The easiest way to reset it to open the browser's console (F12) and type window.localStorage.removeItem('bunbons')
I figured out the issue - it happens moving eggs in and out of the inventory. Uploading a fixed version now! You can reset your game state by using the console command resetState() or; in the game itself, typing a tilde ("~") to open debug mode, "r" to reset, and "~" to close the debug mode again.
