If this game was a virus I wouldn't have spent four months pouring hours of work into it completely for free, I have no idea why it's saying that but I see detections like this pop up all the time (a common one being Wacatac). My best guess is Clickteam as a program has a lot of control over the player's computer, and because it's a third party app most anti-virus programs really don't like that.
Rest assured, it's a false positive and the game is completely safe! Sorry for the scare.