The latest effort by the NHS to encourage Britons to be more active comes in the form of a smartphone game. The Walk is a game app developed by Six to Start which turns daily exercise into a engaging challenge. Introducing users to a series of fictional scenarios (starting with an explosion at Inverness station), the game finds players immersed in an imaginary world, where they control the central character, Walker, who carries a mysterious package. To progress further into the game, players must keep walking in real life. The further a player walks, the more of the game is unlocked - including clues as to the contents of the package, its intended recipient and final destination. The basic rule is that to continue playing, you must keep moving, promoting a healthy, active lifestyle.

The Walk is available for iOS and Android from the App Store.