Oh, that's unfortunate. Shame you can't play my game because of something silly like that.
Like you said, it's probably something like chrome overreacting when downloading zip files. I've heard that some extension or settings can cause this issue. You can try using edge, but honestly if it's too much trouble it's okay to give up as there are so many other games to try out during this jam that won't have this issue.
Thanks for telling me, really understandable issue that's not your fault