Doesn't satisfy Rule #1 of JSK13 compo! about q1k3 HOT 1 OPEN

All your code and game assets should be smaller than or equal to 13 kilobytes [...] when zipped.
~ https://js13kgames.com/#rules

build.sh produces a ZIP that satisfies this rule. Yes, this rule is quite arbitrary, but all submission are judged against it.

Also worth noting: webservers typically employ gzip compression when serving html/js. So when loading the game in a browser, only about ~16kb (depending on the gzip level) go over the wire. If the binary files would be gzipped, too, it would be very close to the 13kb. E.g. for the server at https://phoboslab.org/q1k3/ (without gzip for the binary files):

from q1k3.