Engadget pointed out, an update to the Unity engine allows cross-platform multiplayer for iOS and Android players.
Google Play game services also received a change to their categories, bringing the total number of video game genres on the platform to 18. Lastly, Google plans to launch a "game gifts" service, which will allow players to send one another in-game items. The company launched its game services software development kit in May 2013 as an answer to Apple's Game Center service. Google also recently purchased Android controller manufacturer Green Throttle Games.