Thanks for your help.
I tried the itch app. I am getting further, but now I'm trying to start a 1-player game and I'm getting "Oh No! Integrated server exited unexpectedly. Code -532462766". You sure this isn't an issue with connecting to a server?
I checked the zip file and I'm not seeing "LogicWorld.Subassemblies.dll". So either I'm dumb or it's not in the zip file.