The Childhood, Tradition, and Change project undertook the largest nation-wide study of children’s games and play culture in Australia in 2007-11 and resulted in a substantial archive of visual, oral, and written materials. Much of it is available on an open-access website, including details of a variety of games. This essay traces the project’s methodology and findings and examines how the online resource can contribute to understanding among scholars and laypersons of the dynamic heritage of Australian children’s play.