I know that Mac will warn you because it's not notarized.
I'm very interested in the crash though, did you get any error message? What MacOS version are you running and what Mac do you have?
Thank you for this!
Thanks to your error message I found out that the game does not run when launching it by double clicking it in Finder.
However the game will work when you download and run it via the Itch App.
(Or alternatively by running the launcher that's inside the app bundle "RotoForce_demo.app/Contents/MacOS/rotoforce-launcher" directly, for the tech savvy)