Yeah, it is my game, and it was never flagged as a virus before, only now, it is so annoying, I definitely did not write a virus. I actually made it with Python/PyGame, I even published the source code on GitHub:
https://github.com/kyra169090/deathdream_pygame
I don't even have the time lately to fix this, but I will do it sometime. Maybe I will make it rather a browser based game so no one has to download anything.