I'm just getting "Error
The following features required to run Godot projects on the Web are missing:
Cross Origin Isolation - Check web server configuration (send correct headers)
SharedArrayBuffer - Check web server configuration (send correct headers)" and the downloadable .dmb file seems to only be for Mac. :(
I solved this by going to the direct embed link: https://html.itch.zone/html/8287938/web/index.html