Part of the work I have been doing lately is creating custom pages for the pages in Google Play Games. This includes the Achievements, Leaderboards, Load Game, Player Se, Player Selection, etc. The plan is to create them with the same look and theme of my apps but maintain rough feature equivalence. It was going fairly well until it came down to a feature of the Leaderboards viewer. There was a simple button to let you compare your profile with that of another player. I found no documentation whatsoever regarding how to build an intent to do this.