Too Long; Didn't Read
After struggling with GoogleSignIn, I had decided to write this article. Unity3D can be easy to implement and work like a charm with Google SignIn. After each step, make sure your code is building and running on a physical device successfully. For upcoming days, I’m planning to continue with 2nd article to integrate it to the Firebase Auth system. I'm not adding any code to this article but please add your code to the comments below. As you see you can get your google login component from the script below.