Absolutely it's a false positive. There's a few of my older games that do this. I'm looking into it.
Am I right in assuming that it's Windows Defender that's reporting the positive virus check?
Viewing post in Cybernoid - Phoenix (Cybernoid III) comments
Yes it's Windows Defender. I got around it by temporarily adding the .zip extension as an exclusion to the Virus & threat protection settings, and it then kept the download. I have unzipped and run it and everything is fine. I had a very quick blast and it looks great - will give it a proper go soon.
I've had more of a proper play now and first of all - well done on an excellent game that totally retains the feel of Cybernoid. It's still brutally hard but you get that little further each time, and learn how best to tackle each screen. Great stuff.
My only suggestions for improvement at the moment would be: (a) a high score table, or at least something that displays your highest score during that play session, and (b) is it possible to have a full screen toggle? It's fine in a window but I do prefer the immersion of full screen.