I am sorry to hear that, I think it is something related to the new version of Godot game engine. But it is still working on browser for me. (I am using microsoft edge)
I had the same issue with another Godot game I tried to play as well. So, it might be an issue with my browser, not sure.
I guess so, because it is still experimental on itch.io so it might be your browser problem.
You can still play the downloadable version though since it gives the full experience and it has more secrets :)
