This is the game Apple used to show off iPhone 6
To show off the graphical capabilities of the new iPhone 6 and Metal, iOS 8's new graphics API designed to improve performance, the company showed off the upcoming MOBA Vainglory.
Vainglory is a forthcoming multiplayer online battle arena game, a la League of Legends and Dota 2, developed by Super Evil Megacorp for iOS. It's the studio's first game, but the people making the MOBA designed specifically for touchscreens are industry vets.
The developer says Vainglory is an "unapologetically core" game designed specifically for mobile devices. Matches in Vainglory pit three players against three, each on their own mobile device, and matches last around 20 minutes, the developer says.