Some players have reported that their antivirus flags the game. It is a false positive. The build is safe.

The game runs on an engine written from scratch instead of a commercial one. Small independent programs like this have no reputation history with antivirus vendors, and heuristic scanners tend to treat anything unfamiliar as a risk. That is what sets the warning off.

Every build is scanned before it goes out. If your antivirus blocks the game, you can allow the game folder in its settings, or send the file to your antivirus vendor marked as a false positive. Those reports are what makes scanners correct their databases.

Thanks for reporting it, and sorry for the hassle.