What did windows show? Windows usually block people from running uncommon/ unsigned exe files, which is most indie games. in the notification saying Windows blocked application because they couldn't check its origin, It usually had a tiny text link like "learn more" and " run anyway" that you have to click to be able to play a game by an idie third party.
My game was developed with Renpy, a very popular visual novel engine and I believe that it doesn't have any virus.