Called Other, it is the first computer game designed for the National Theatre of Scotland and has been created to support the UK premiere stage production of the play.

The game is played using an iphone and headphones, and works through satellite tracking to take players on a journey around the streets of Dundee featuring puzzles, stories, surprises and spine-tingling, sinister audio.

Starting at the theatre, players are guided around the city, unlocking game "events" when they reach key locations.