Various performing arts increasingly employ projection screens and other information displays as essential elements of the show. We present some possibilities and lessons learned for the interactive, “immaterial” walk-through FogScreen in performing arts, analyze its suitability for stage setups, and give some guidelines for show design. We also describe our experiments on composing interactive 3D graphics for a FogScreen-based performance. Categories and Subject Descriptors J.5 [Arts and Humanities]; H.5.1 [Multimedia Information Systems]: Artificial, augmented, and virtual realities; H.5.2 [User Interfaces]: Graphical user interfaces; I.3.6 [Methodology and Techniques]: Interaction Techniques; I.3.8 [Computer Graphics] Applications. General Terms Performance, Design, Experimentation. Keywords FogScreen, performing arts, interaction, 3D graphics.