Enerations have been inspired by Edwin A.Abbott’s profound tour of the dimensions in his novella Flat land: A Romance of Many Dimensions (1884). This well-known satire is the story of a flat land inhavited by geometric shapes trying to navigate the subtleties of their geometric,social, and political positions.(A new animated version of this classic is now available as well; see Johnson and Travis [2007].) In this artice, we introduce the Flatland game a related profect. Which inspire repeated trips between Flatland and our three-dimensional world. Both activites are effective vehicles for students’ exploration of the geometric interplay between the dimensions.