Movement drives dynamic natural imagery with a Kinect-based user interface in the Grotto, a contemplative space for patients and their families at the Children’s Pain and Palliative Clinic in Minneapolis. We collaborated with U+B Architecture and Design and the hospital staff to create the immersive environment. Visitors use the Kinect to create patterns that imitate the natural flow of ripples and currents in water. We developed the content in Unity3D, enabled for immersive projection with Omnity. An OmniFocus 30200 projection system – now 6,000 lumens bright – fills the 14′-wide room with vivid color, projecting onto curved walls with high-contrast screen paint.