So, I tried to play your game first in the browser, and again it didn't work. The loading bar showed and filled, then the loading circle (weird that there are two loading indicators), then I get this message:
call_indirect to a null table entry (evaluating 'Module["asm"]["Bk"].apply(null,arguments)')
I then downloaded your game and played the Mac build. That worked great. It was very fun, though it took me a minute to figure out how to get the powerups, or that they were powerups at all. It looks really good, the variety of enemies was good, and I really like the way the stars(?) moved around in the background. Nice work.