A 2D GPU fluid simulation of standing waves over rocks — and the rafting business built on top of it. Needs WebGL2 (Chrome, Edge, Firefox).
Rapids Tycoon →The game. Tourists, money, reviews, crocodiles, raft designer. Press Auto and watch it run itself. The physics lab →65k–262k particles, draggable rocks, flow and viscosity sliders, live Froude number. Best on a desktop GPU.