The Game Enhancer app is designed to push up the gaming experience. With it you find all your games in one place and while playing you can block all notifications from outside so you can focus on the game. Game enhancer also allows you to record the screen*, and share it with other gamers, as well as letting you talk to each other during the game. And, what's more, you'll find in-game tips and tricks while you play. Thanks to the extended screen in Xperia 1, the Game Enhancer UI will not interfere with the game view.
* Screen recording is not available in all games.