Zombies, Run! doesn't currently support simultaneous multiplayer, but if you'd like to run with a friend, the best way to play is to:
- Create an identical playlist on both devices
- Turn off music shuffle
- Turn off zombie chases
- Start the mission at the same time
This should ensure that your experience of the story and music is synchronised, especially if you are running similar devices.
Some of our players have used more unorthodox strategies like carrying around boomboxes or using radio transmitters. This is somewhat impractical but also pretty cool.