I load up the game, choose a language, and then click space bar to start. After that I just see the planes flying around forever and can't do anything else. Any thoughts on how to fix this?

I'm on mac running Catalina.

Hello,

You might be able to resolve your issue looking at this thread:
https://itch.io/t/828156/osx-issues-how-to-start-and-windows-10-too-it-seems