It seems you didn't mark "play in browser" near the archive on the edit page, so the game is not available. You could only download the build, but not play the game :(
most appreciated; it’s nice to get feedback and pointed in the right direction;
So it will eventually have a windo saying congratulations and ask you if you want to restart or not. but I am yet to finish learning UX/GUI event windows, I can utilise the console within Unity but that’s it.