You shouldn't try to copy files out of a zip without extracting, since zip files are compressed and won't work properly if they're not uncompressed, as people have said, if your having trouble try 7zip from www.7zip.org which works far better than windows default unzipper.
Windows defender didn't give me any warnings either. When I extracted the contents of the crazy party beta 58 folder in my downloads, the contents appeared to be there but when I tried to copy it it clearly wasn't, ie, it had been deleted automatically.
When however I moved the crazy party zip folder to my audiogames directory which I have made an exception from windows defender it extracted fine and copied across to my main crazy party folder fine.
Edit: Okay this is confirmed.
I just tried extracting beta 58 and running the exe file and got this:
Operation did not complete successfully because the file contains a virus or potentially unwanted software.
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