We underestimated the players desire to compete with friends and the world. And we were also afraid of using social features because most of the time they can be very annoying and we couldn’t remember one “clean” example.
Since leaderboards and achievements were features that most of the players asked for, Piques has Google Play Games Services integration now and players can compete with each other. We did it in a non-invasive way: the game will never ask for it and it’s totally up to the player to sign in and sign out.
So go ahead and start competing!