itch.io

Cookieth is correct. Version 4 disabled this method of enabling cheats.

No,  never change anything in the data folder of a Unity game.

Changing a file in the data folder can compromise the game in very strange ways.

Another way to get the to the right folder (on Windows):

Press Windows + R.

Input %appdata%\..\LocalLow\Denki\Autonauts\

Press Enter and it should open the right folder.

https://itch.io/t/121537/how-do-u-use-the-cheats#post-239567

I misspelled the file name. It should be Cheat.txt, not Cheats.txt.

1. The CheatTools-Menu is usually bound to T.
2. A text document.

EDIT: This only works for Version 3.

Actually, there are cheats in the game and quite easy to activate:
Open the save folder: C:\Users\<USERNAME>\AppData\LocalLow\Denki\Autonauts\

Create a new text file called Cheat.txt

And, that's it, reload the game and the cheats should work (At least the CheatTools button works now).