Procedural generation,
one droplet at a time.

Bite-sized interactive essays on the algorithms that build worlds. Every article embeds the real simulation: drag the sliders, step through the algorithm, watch the terrain change. Standing on the shoulders of Red Blob Games.

2048-resolution terrain with jagged mountain spires and eroded valleys, navy blue sky
June 11, 2026

Hydraulic Erosion

Drop a hundred thousand raindrops on a noise field and watch them carve valleys, ridges, and deltas into a living 3D terrain.