Mac .apps no longer work after downloading and unzipping?
"Check with the developer to make sure [game name here] works with this version of macOS. You may need to reinstall the application. Be sure to install any available updates for the application and macOS. Click Report to see more detailed information and send a report to Apple."
Just this week I have been getting this message when trying to open my games as Mac .app files and it is super bad timing. I'm running Mac OS 10.13.6 (High Sierra) and GS 1.25.100 and have downloaded previous versions of these apps that have worked fine. I've also sent the files to other people and they can't get them to open either. I haven't done any Mac updates that would cause this.
Any clues as to how to fix this?