that was garry kasparov.to a slightly less noble task. for click‘s show at this year's hay festival, we challenged click code monkey stephen beckett to create a game that the entire audience could play. stephen has created this game. we're going to split the audience in two now, right down there. this half is going to play against this half. could this half say hay? hay! could this half say wye? wye! superb. so this is the game. 0ur teams have to be the last one to fall off this plank, whether they do that by canny balancing or more boisterous butting is up to them. they're in two teams and by each moving their arms left and right, they can altogether control where their player goes. and there's one more surprise feature, by shouting out special keywords they can make their player get bigger and therefore heavier. so that's the rules of the game, but how can it see what you're doing and hear what you're saying? behind the scenes, it's running in a game engine called unity. you can download this for free, and