Are you tired of running from zombies, but looking for another way to distract yourself from boring yet obviously beneficial exercise?

The Walk–developed jointly by the UK’s National Health Service and Department of Health–has you walking the length of the UK while listening to an original story in which you’ll need to figure out why a bomb exploded in the tube station, evade hostile agents and the police, and discover how a mysterious package you’re given might save the world.

The Walk is a pedometer, too, tracking your every step and mapping it as well. It’s optimized for the new M7 chip in the iPhone 5s, so owners of that iOS device will track their steps even more accurately and with lower battery usage. It will also adjust to your own fitness level, making this an ideal app for anyone who wants to get active while listening to a ripping good yarn.

The Walk is on sale now for $2.99, down from it’s original $4.99 price point, so if you’re interested, head over to the App Store now.

Source: App Store: The Walk – $2.99 | Six to Start