In the almost universally accepted definition of transmedia storytelling, adaptation is not part of the phenomenon. This chapter explores the underlying function of the argument: to distinguish transmedia as a theory and practice. It interrogates the redundancy and simple retelling justifications for excluding adaptation and finds them unfounded and contrary to aesthetic preference studies. Through a comparison to the same approach in games, documents the consequences of the exclusion approach. The chapter ends with emerging approaches that help distinguish transmedia theory while recognizing the complexity of transmedia practice.