itch.io

This happens to me too. I'm on Linux, and it happens in 0.5.2 + 0.5.1. Even tried the Windows version through Wine and the same crash occurred. The audio keeps playing, but the game freezes and I can't do anything. I checked the Godot logs, and I don't see anything particularly helpful.

You don't have to buy it again. As long as the purchase is connected to your account, there should be a download button at the top of the page.

He can't release the whole game due to legal reasons.