The new iPhone app called "Zombies, RUN!" is not your standard running game.
It's designed to encourage folks, such as say, video gamers, who aren't usually associated with exercise to take up running.
British writer Naomi Alderman, who is a gamer herself as well as an Orange-award winning novelist, came up with the idea for "Zombies, RUN!" while in a class for amateur runners she tells weekends on All Things Considered guest host Mary-Louise Kelly.