The full game was released in June 2023 and costs 25 USD, it looks like you donated 50 cents when you downloaded the demo (which is optional, because the demo is free).
( Dunno if I accidentally resent this)
I donated on 2019-10-10 at 09:31:42 , pretty sure I donated the .50 to get the files when I did it but it was also my way of supporting the game. I'm disabled so I can't donate often or much but I try. So did I buy the demo? Cause when I open my library this games under "Owned" and when I go to download it I use the button at the top of the page..not down in downloads. Was there a mistake? Do I still need to buy the full game?
The full game was uploaded on June 2023 so if your itch.io library shows AMAP as "Owned" they probably mean the demo and the files that were already available for free before that date.
We will soon put out a new discount/offer for the full game so you can wait it out a bit ;)
As the other comments/reviews below can attest the full game is very long and is worth the price :)