Yep, I had and still have some trouble making the web version working accross all browsers, maybe it has something to do with Godot on Linux, not sure. But, I did make a compiled Windows version, it may work for you: https://makaronelle.github.io/releases/chuchu-win.zip Really sorry for the inconvenience!
But you're not missing on much tho, sadly the screenshots is almost all you get. It's less of a game and more of a proof of concept since I switched from a totally different project mid-jam. Still proud of the result, and thank you very much for taking interest!