The Google Mobile Ads SDK collects and shares IP address, Android advertising (ad) ID, app set ID etc. automatically for advertising, analytics, and fraud prevention purposes. For more information please see: https://developers.google.com/admob/android/privacy/play-data-disclosure
Play Games collects your activity, usage info, performance info, personal identifiers, and device identifiers for functionality, account management, analytics, and debugging. Data that Play Games collects is encrypted in transit. For more information please see: https://support.google.com/googleplay/answer/3129346
Apart from this, developer does not directly collect, process, share or host user data.
The game can be played without creating an account or requiring login.