I completed my first mission and loved it. Covered just over 3 miles which isn't much but not a runner so this is a good start.
The game involved a story line that includes the occasional chase where you have to pick up the pace (all gps monitored) to outrun the zombies. You pick up items to build up the town that you crash land close to at the beginning of the first mission.
Interwoven in the story is the playlist you create. Mine was:
Sabotage - Beastie Boys
Lust for Life - Iggy Pop
Nowhere to Run - Martha Reeves
Monster - Kanye West
I know u got Soul - Erik B and Rakim
Bullet in the Head - Rage Against the Machine
Back I'm Black - ACDC
Particularly exciting when I was told of the first group of Zombies around the corner with the comms guy shouting in my ear to run and then Iggy Pop cutting in.
Must have looked crazy though as I neared the end of the mission and reached my house I got a zombie surprise me and I again had to sprint to evade it. So I ran around for a few minutes, up the road, into a car park round in circles for a bit to finally get back home.
Enjoyed it, the gamification of what is a boring thing to do has made me want to carry on.