Google recently introduced "Google Play Game Services integration" in play store games.
How can I list games that supports "Google Play Game Services integration" using play store App or using play store site?
Edit: Accidentally found one game
A search of the Play Store for the phrase "Game Services" finds about 20 games at the moment.
Additionally this Google Docs spreadsheet lists many games with game Services integration: https://docs.google.com/spreadsheet/lv?key=0AiTeFLs7RHJYdFZGUFQ5MFlIU2IzNFpmQTAzc0JhMk