@DJ-Max i mean they are doing this entirely on their own. 15 to get the up to date version isnt all that bad considering it is patreon and they take a cut of that before they even see anything. Plus there are multiple people working on it so cut them some slack. Its not like you have a game on that scale made by you alone. Take a chill pill.
DJ-Max
At first, I assumed the game is too big to run on NG. When I went on their patreon and discovered you need to pay a fiver to 'Gain access to a two versions behind game build' I realized this is a scam.