You will walk about 2.7 km through La Plata. You will remember none of the sights and all of the betrayals. In plain terms: a 2.5-hour team spy game on foot, played on your phones. If you are the one organising: the missions give everyone something to contribute, there is no lecture to sit through, and you look very good for finding it. 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. There may be a double agent on your team. There may not. About 2.5 hours, 4 stops and roughly 2.7 km on foot. There is no guide, so nobody will make you stand still and listen. Afterwards, the surprise-party planning committee has a shortlist, and one teammate is never being told anything again. 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. Book a private game for 1 to 8 players on a date you choose; a team of one works too. Teams are up to 8 players. A bigger booking plays as several teams of up to 8, formed at the meeting point.