Hey, the fix for this is to follow the top answer here: https://superuser.com/questions/1127274/the-application-exampleapp-can-t-be-opened-how-to-modify-the-executable-statu
Then you'll need to go to Security and Privacy and allow the app to open anyway (ignoring the malware potential warnings). This fix works for a lot of the games in this bundle. Not sure what causes this but it has to due with the Catalina update as far as I can tell.