With Pokémon Go, you'll soon be able to battle Pokémon monsters in the real world. That's the premise behind Nintendo's first mobile game, developed in partnership with Niantic, the company responsible for the popular mobile game Ingress. Like that game, Pokémon Go will use Niantic's GPS technology to have you out on the streets, catching, trading and fighting various pocket-sized monsters. Nintendo is also set to introduce an optional companion device, the Pokémon Go Plus, designed to help you take part in the game without having to constantly check your phone. The Pokéball-shaped wearable will vibrate and light up when you get near a creature, ultimately helping you to catch them all. Available for both Android and iOS, Pokémon Go is scheduled to launch in 2016.