The green, falling digital code depicted as rain in the film "The Matrix" consisted of Japanese sushi recipes.

'The Matrix's Digital Rain Has Surprisingly Simple Origins The Matrix production designer Simon Whiteley went back to the drawing board after the Wachowskis requested a title sequence redesign.

Step into the digital rain: Cosm’s dome transforms into a futuristic playground, where green code cascades and the Matrix universe comes alive in Shared Reality.