On MacOS Monterey 12.2.1
I get this error after unzipping. “StarbaseSim.app” is damaged and can’t be opened. You should move it to the Trash.
Viewing post in Known Issues
Did you check this thread? https://itch.io/t/1816448/mac-feedback-and-trouble-shooting
If it doesn't work, you can also try to use the Itch app