How do I install Google Play Services to my unity3d app

My app is live on the google play store . But I had forgot to add the google play services. How do I go back make changes to my app ?

Hi, You have to import GPGS plugin into your project, Here is the download link: GitHub - playgameservices/play-games-plugin-for-unity: Google Play Games plugin for Unity
go to current build and there you will find the unity package to download.

Just download it, import it, then complete your code of integration and upload the updated APK to the Play Store and update your game.

There is no way to add GPGS directly on the existing app on play store.

Hopefully this will help you…