What else can I say? It’s all described in the instructions. You just need to use command to remove .app bundle from quarantine. It’s xattr -d com.apple.quarantine path/to/game.app
xattr -d com.apple.quarantine path/to/game.app
Those instructions didn't help me, either. The terminal spits out an error. I've tried it several times.
Because you missed space between quarantine and .app path.
quarantine
.app
