Shift is a location based game, "Hunger Games" style, which links your virtual life with your real life.
In Shift you can play as a hunter or an escapee. The hunter's goal is to capture the escapee, in the real world, and the escapee's goal is to avoid being captured by the hunter.
Shift automatically matches you with the available players around you and allows you to start playing. You can always create your own private, customized game and invite friends to play.
The game - the hunter's mission is to get within a reasonable distance (approximately 30 yd.) of the escapee while staying in the game zone, while the escapee needs to get away from the hunter (again while staying in the game zone) till the end of the game. But pay attention, your location is never completely presented to your opponent. You need to engage with the opponent, meaning to get physically closer, in order to figure out his exact location. Your opponent can act too and confuse you about his location.
Shift has a secret back-end intelligence agency that assists you by providing a real-time intelligence feed about the opponent - like his approximate location, actions that he does, his status and more... This can help you to decide how to act in the game itself.
During the game you can chat or send pictures to tease your opponent. You can also invite friends to play (Facebook and other social media).