The present work is based on the research and design of a mobile AR experiment performed in the context of the emerging interdisciplinary fields of digital heritage and experience design. In an attempt to find a method to support the justification and discovery of elements that can influence the user towards the fulfilment of an objective in a heritage experience, my experimental research reveals that a combination of play moments including elements of embodiment and sensuousness in mobile AR are most suitable to convey a story. Determining suitable gameplay and game mechanics requires an appropriate setting and context for a user’s encounter with digital heritage. My research outlines a design methodology to reveal how the aesthetics of mobile AR technology can be designed to support critical user experiences through play and discovery. / Designing Digital Heritage. Seeing Secrets