Engaging experience is a specific kind of experience that a user acquires when and after using a product frequently, intensively, actively, vividly, and completely, etc. For example, if the appearance of a toaster is completely transparent, a user can see how the bread changes from white to brown. The transparent sides stage the toasting process as a visually engaging performance. To expand on engaging experience, this paper presents the definition of engaging experience, example products that engage users, the classification and instinctiveness of engaging experience, and product properties that foster engaging experience.