qubotron

Added support for Game Center - Try to beat your friends' high scores. See how you rank globally. - As a start, only leaderboards (high scores) will be reflected in game center. Achievements (badges) follow in a later update. - If you don't want to use Game Center, you might have to cancel the login screen up to three times, and will never be asked again (until you re-enable Game Center in the Settings app). Fixed freezing on the start screen for iOS 14 and lower

Source: Apple App Store listing.