May I ask how you did this? I've been trying to open the game for days on Catalina and I'm still getting the same error no matter now many times I reinstall.
so when i downloaded the game file, it was a .zip file - the first time, i double clicked the zip and a game file appeared which refused to open. the second time, i right clicked on the .zip and used the unarchiver to open it (i believe that’s the system tool?), after which it worked fine.