I am pretty sure you know Jewels Master and Balls Master games. In both games you get points for breaking the jewels or balls. To make the games more attractive I was using Scoreloop for online scoring. Unfortunately, Scoreloop is going to close servers in December (Scoreloop company is dead). Because of that I decided to integrate global leaderboards from Google Play Services. Hopefully, you won't have to do anything. Your current scores should be automatically sent to the Google servers :)
I hope that new leaderboards will be much better than the old ones ;) Enjoy!