From what I can piece together it's an immersive app for the iPhone which enables you to follow a storyline whilst running.
You take the role of Runner 5 who is going out to collect essential items to take back to a small band of survivors, occasionally being chased by zombies!
It sounds BRILLIANT but it's £5 on the app store and I'm too tight to just go ahead and buy it without other recommendations first!
Has anyone tried it? Or even heard of it?