In The Matrix (1999), the simulated reality is represented by cascading green code.
The distinctive green “digital rain” appears in the film’s computer interfaces and became one of its most recognizable visual symbols. It suggests that the world experienced by humans is generated by software rather than being ordinary physical reality. The effect is especially associated with scenes in which operators monitor or enter the Matrix.
The Matrix uses other colors for dramatic and thematic contrast. The real world is often presented in cooler blue-gray tones, while the Matrix’s green tint evokes an old computer terminal and creates a slightly artificial atmosphere. This color design helps viewers distinguish two layers of the story without requiring constant exposition.
The code is not intended as a literal readable transcript of everything happening inside the simulated world. It is a cinematic visualization of data and system activity. The film was directed by Lana and Lilly Wachowski and released in 1999, becoming a major influence on science-fiction action cinema.