Game Dev Story: How to Mange Your Save Files

The author of this manual is not responsible for the safety of your save files, the listed methods can lead to deletion of your current progress if used carelessly.
The author also warns to be careful when downloading and using third-party files from the Internet.
BE CAREFUL!

Okay, to make sure that the good Steam does not want to save us and return our original files, first we should disable cloud saves.

Go to game properties:

And check the “Keep games saves in the Steam Cloud for Game Dev Story”:

That’s it, we are ready for experiments!

Perhaps you want to save your current progress or create a save point to which you want to return after experimenting inside the game. To do that, open the local folder:

And copy “saves” folder to any place outside the Game Dev Story folder:

And you are ready to make some fun!

• The simplest option is just deleting savefiles as that’s the only way to reset your metaprogress (genre/type levels and direction points which are moved between the runs)
• Perform an expreiment which requires to make manual saves. After finishing just copy saved folder back into game directory
• Download saves and put them into your game directory. For example, you can get prepared archives via https://www.speedrun.com/gds/resources and jump straight to the office 2 or office 3 with some amount of money already grinded. All you need to do is just download the archive and unpack folder to the game directory. More savefiles to go later!

On mobile platforms, the ability to manage saves is reduced to the ability to delete app data. This can still be useful for deleting game metaprogression. Take a look at following instruction to see how you can clear the game data.
Android:
https://www.androidpolice.com/clear-app-cache-data-android/
iOS:
https://www.businessinsider.com/how-to-delete-app-data-on-iphone