'Spongy' does something similar in 128 bytes, half the size.

https://www.pouet.net/prod.php?which=53871

http://www.youtube.com/watch?v=36BPql6Nl_U

The name comes from the 'Menger Sponge' fractal it's based on:

https://en.wikipedia.org/wiki/Menger_sponge