Uh-oh. I think the save system died.
If you're on Windows you can fix this quite easily:
- Make sure the game is closed
- Open the Run prompt (Windows Key + R)
- Paste this there and run it: %USERPROFILE%\AppData\LocalLow\Placeholder Gameworks\Death and Taxes
- Remove the contents of this folder
- Run the game again
Let me know if this works! ^_^
This has already been fixed for the full version :)
The demo shouldn't even technically have the save system enabled but apparently somehow it might have enabled itself.