Really impressive! Feature suggestion 1: Maybe you could pre-render a grid of rain drops to get a nice overview of the flow paths and how they converge. Would

Really impressive! Feature suggestion 1: Maybe you could pre-render a grid of rain drops to get a nice overview of the flow paths and how they converge. Would be cool and interesting. Feature suggestion 2: It might be possible to include man-made structures along the path, and to include a small delay when the water is halted by dams/power stations/whatevers.