MAGMA: A Liquid Light Instrument A single HTML physics-driven lava lamp. Every blob carries heat it soaks it up at the floor plate, rises on buoyancy, sheds it at the cap, stalls, and sinks-the canonical lava-lamp circulation, with nothing keyframed. Blobs merge by transferring mass through sustained contact; overheated giants pinch off children. Total volume is conserved, so the lamp never empties. The surface is a metaball scalar field shaded through a palette LUT, with marching-squares iso-contours stroked on top as a glass rim and a fresnel crown. Run it hot and champagne micro-bubbles boil off the plate - flip gravity mid-rise and they hang weightless.