Yeah, I just downloaded your windows file to test it. It appears to have all your project files, but no ".exe" and it has a "project.binary" instead of a "project.godot" file. Hmm...maybe this is the contents of the usual PCK export file without an EXE? *shrug*
Thankfully, you got a web-browser version up so everyone can play! And thanks for the wonderful advice! =)