So for a game, should I set On start of (home) layer --> request sign in?
Or should I just have a button for the user to sign in?
Auto sign in
Pros: User easily sign in once and can use all the game's features such as achievements and leaderboard.
Cons: For the users that don't want to sign in, then the sign in pop up would be very annoying everytime they start the game.
A sign in button
Pros: Not annoying for the users who don't want to sign in.
Cons: Some users may not pay attention to the button and don't realize that the game has more fun features.
So what are your thoughts on this? If you have an android game, did you use Google game services? And how do you implement it?