How does facebook gaming work??

[Sincerem]

I recently heard about facebook gaming app, how one can stream live games via an app. Play game with other real world players on the app section. Others can also partake in commenting and posting topics via the app. Sharing their experiences with one another about games and other related topics via the app. I'm very new on this one, I don't know how to get started, nor making any income through this gaming network, developed by facebook enthusiasts.

Is their any one here, with experience about facebook gaming, and how the features on the app works??