How was Serial Experiments Lain conceived?
Yasuyuki Ueda was a producer at Pioneer LDC when he conceived Lain as an original work, no manga, novel, or game underneath it to adapt. He has called the decision “an enormous risk,” and the risk was the point: Lain was designed from the beginning to connect across forms of media. In an interview quoted ever since, Ueda put the method plainly: “the approach I took for this project was to communicate the essence of the work by the total sum of many media products.”
So the pieces were built in parallel, and not in the order you would expect. The scenario for the PlayStation game was written first; the game and the anime were produced at the same time, with the anime reaching the public first. Yoshitoshi ABe’s short manga was drawn as a dōjinshi and folded into the artbook. Ueda and writer Chiaki J. Konaka both stressed that multimedia projects were not unusual in Japan, what was unusual was the contents of Lain, and the way they are exposed.