Ending support for multiplayer APIs in Play Games Services

Starting on March 31, 2020, we’ll be ending support for real-time and turn-based multiplayer APIs. If your game includes real-time and turn-based multiplayer integration, you will be unable to turn these features off and can continue using them until March 31, 2020. These APIs cannot be enabled for new games. 

For alternative ways to create a multiplayer experience for players, you can consider using Firebase Realtime Database or Google Cloud Open Match.