Nice game!
I know about the antivirus thing :P. But don't worry, the reason is probably that my game is a .bat file, which is a type of file that communicates with the command line. I have only used commands such as echo (for writing things on screen), and other basic commands, none of them are harmful to your PC. If you don't believe me, you can right click the file, and click edit, where you'll see the source code.