I made a similar demo: http://dlubarov.github.io/webgl-infinite-terrain-demo/ http://dlubarov.github.io/webgl-infinite-terrain-demo/ Source code: https://githu

I made a similar demo: http://dlubarov.github.io/webgl-infinite-terrain-demo/ http://dlubarov.github.io/webgl-infinite-terrain-demo/ Source code: https://github.com/dlubarov/webgl-infinite-terrain-demo https://github.com/dlubarov/webgl-infinite-terrain-demo It's also Perlin noise, but with multiple layers and finer granularity, so it appears more detailed. You can control the camera with WASD and the mouse.