The GameSparks Unity SDK by GameSparks allows to interact with the API to connect to the backend. Video game features available include character controller, image effects, particles, and physical materials.
Google has rolled out Google Play Services SDK 11.6.0, which introduces major changes to how the APIs are structured. The company is deprecating one API while decoupling another. The idea is to reduce the amount of boilerplate code needed to use the APIs -- something everyone can be happy about.
There are a number of advertising networks available for mobile applications, but game company Tap Me is creating one specifically for game developers. Tap Me has launched its iPhone SDK today, with plans to support other platforms soon, including a generic API that will allow developers full control of how advertisements are included in their games. Rather than simply provide display advertising, Tap Me ties the ads into in-game actions, with brands able to be integrated deeper into games.