A fireworks show fought out inside a combustion fluid. The solver carries hot emission and soot as separate channels: heat is buoyant and cools fast, shedding heavy soot as it goes. Rockets climb on sparkling trails and detonate as radial pressure shocks that fling rings of strontium red, barium green and copper blue fire; crossettes split again a beat later, and every ~9 seconds a finale barrage lights the whole sky. Each burst rolls up into a buoyant mushroom and leaves a smoke canopy underlit by the next shells, while ground fire keeps the bottom edge burning. Drag for a flamethrower; press to set off a shell of your own.