Sunglasses optional. Suspicion mandatory. Your mission starts at Gettysburg Recreational Park. In plain terms: your team explores on foot and takes on spy missions together. Most city activities are about the sights; this one is about the people you play with. Specifically, watching them try to act casual in public. Some missions need a sharp eye, some need a little nerve, and some need everyone talking at once. No puzzle skills required, just a sense of humour. Expect a mysterious twist along the way. Expect 2.9 km, 4 stops and about 2.5 hours, at whatever pace your team likes. It is a game on your phones, not a guided tour, with nothing to download. And then there is that one teammate who is never living down what happened at the third stop. You will have the photos to prove it. Who it's for: friends, couples and families with teens; and private groups, from bachelor and hen nights to work teams and active over-55s. Note: book any day as a private team of 1 to 8. Bigger groups play as several private teams.