What game do the children make up in this chapter?

The children invent a new game about Boo Radley. Jem plays Boo, Dill plays Mr. Radley, and Scout plays Mrs. Radley. They polish it up over the summer into a little dramatic reenactment of all the gossip they've heard about Boo and his family, including a scene using Calpurnia's scissors as a prop.