They were originally published on the official Matrix website from 1999 to 2003 as three series of webcomics with additional pieces of artwork, most of which were later collected into two volumes, published by the Wachowskis' company Burlyman Entertainment along with three comics never released on the internet. The comics' editor was Spencer Lamm. The Wachowskis contributed one script to the project, Bits and Pieces of Information, aspects of which were later included in The Animatrix short animated film The Second Renaissance.