ErosionThis app simulates (fake) erosion in real time (for me at least) in a cellular-automata-like manner. The simulation and visualization are done in WebGL shaders.
WASD + Shift + Space to move the camera. Scroll mouse wheel to change the movemement sensitivity of the camera. Drag left mouse button to pan/tilt camera. If your on a touch device you can pan/tilt the camera using a single touch drag, and move the camera by double touch drag.