Hey thanks for the post! And sorry to hear you're not able to run the demo. Unfortunately, this is a security issue that Catalina forces on its users, and it requires apps to be verified (or "notarized" as they call it) before the computer will run the program. That's a process we sadly don't have time to go through for this demo, but we're looking for a workaround to help our Mac-using friends. Once the game is finished and released, however, it will play nicely with Mac, for sure. :)