thx - ""xattr -cr [drag the app into terminal]"" this did it for me
Ditto. Older Macbook running OS 10.15, said error damaged file. "xattr -cr [app drag]" worked first try. According to Stack Overflow, the chmod command can actually be dangerous to your system security and probably mess up your computer. Just a warning, it does nothing, and I'm pretty sure that the syntax is wrong (at least for my system). This is a game I would love to see with multiplayer and would buy if I could. For now though, I'm gonna play the heck out of the demo. Great graphics, great gameplay, great game.