I finally managed to work out the really big bugs, and it should run fine now, as far as I know!
I’ve been pondering implementing the possibility to pause, as well as a settings menu for at least muting/unmuting music, but possibly other things too, like difficulty. If there are any issues I think it might mostly be lag/performance issues. Let me know how it does on that, and of course, let me know if there are any significant bugs anywhere.
Link to game here: [ Link ]
Edit (2018-01-12): Updated with new link.