Environment build is an exercise where the players create an environment using themselves as mime objects, environment props and bystanders to flesh out an environment. For example, if the leader calls out for the players to environment build an airport players will leap on stage and turn themselves in to baggage, security scanners, tables, planes, plants, or other things that one would find in an airport.
The First Player, usually the one to the right, will speak a sentence that is considered the beginning of a story. The Second Player then speaks a sentence that ends a story. Another player will step in between the first two players and speaks a new sentence. This sentence should add something in between the beginning and the end of the story.