I'm really sorry :( It's probably tied to the framerate or the browser or something making my messy systems even worse.And yeah at some point you won't be able to progress because of this :(
Aww don't apologise! I'll come back to it on a different browser or something, as it's clearly working for other people. There's clearly a lot of love and clever design gone into it and I want to experience it properly.
Just in case, letting you know I've uploaded an .exe version
