It's the end of the demo, go to the patrion page and you can buy the game, lots more in it than the demo.
Sadly, i have tried using Patreon, but the company themselves decided after the FIRST and only attempt to pay for something was suspicious and said unless i phone them, they will delete my account in X amount of days and i do not use phones, so i thought 'screw it' and let the account be deleted.
EDIT: I tried it again and it actually worked this time, downloading the latest version now.