When troubleshooting installations, please consider the following:
Make sure you have available storage on your system drive and your computer meets our system requirements.
You must install Arcade (and FX) in the default location. This is required.
Make sure you are an administrator account on your computer.
macOS 13 Ventura Failed Installations
Check the following settings: Go to System Preferences > Privacy & Security then scroll down to Security. Make sure option "App Store and Identified Developers" is enabled.
Next, scroll up to Files and Folders and expand the Installer field. Make sure all available folders are enabled. You will only be able to install a file from these folders. If all you see is Documents, move your Arcade installer to the Documents folder and try to install again. This should resolve your issue.