In the context of design for experience this paper presents a review of existing models of user experience. In response to a prevalent view of experience as something individual, this paper suggests how these models should grow to include social use as well. Examples from a multimedia messaging study are discussed to this end and the concept of co-experience is introduced to take into account the social aspects of user experience and the experiences that users create for themselves with designed artefacts. Categories and Subject Descriptors A.0 [General]: Conference Proceedings General Terms: Design, Human Factors, Theory