Sorry for the late reply! There is no saving system in the game, and I don't think there will be in the future. This was just an experiment that I decided to share here. If you want I could give you the source code so you can create your own maps.
That` s OK, and I am grateful for that you are willing to share the code ,but I don`t think I need the code now as I don`t learn about making the Unity game (My English isn`t good and I hope you could forgive my mistake if I have the wrong words
