I've had no trouble with zip files until this game, also for my phone I haven't had that setting on for a good while, so far this game is the only one I've had an issue installing. Don't mean to sound rude sorry.
It's all good, no worries! We've uploaded another demo version, zipped as .tar file. You can try and see if unzipping it works for you.
Took me three hours and my Chromebook crushing but I did, god bless devs.
