The Machinery game engine seems terminated. From email:
Thanks so much for supporting The Machinery.
Unfortunately, we’ve reached a point where it’s no longer possible for us to continue in the current direction. Per Section 14 of the End User License Agreement, the development of The Machinery will cease, we will no longer offer GitHub access, all licenses are terminated as of 14 days after the date of this notice, and you are requested to delete The Machinery source code and binaries. You will receive a full refund of your annual license payment through Gumroad.
We really appreciated you being a part of the Our Machinery Community. We hope we have been helpful in some way to your development needs.
-Our Machinery
The current EULA on the website includes a bit that says they can terminate your license and ask you to delete all source and binaries entirely at their discretion[1].
The latest copy on the wayback machine from May does not have that bit.[2]
1. https://ourmachinery.com/eula.html 2. https://web.archive.org/web/20220529230958/https://ourmachin...
So they used the 'we can update the eula at any time at our discretion' clause to add a 'we can tell you to delete your source and binaries' clause and then immediately invoked it.