Introduction The Matrix rain effect—those iconic cascading green characters from the 1999 film—has become a visual staple of cyberpunk aesthetics. In this tutorial, we’ll build a terminal application that displays the Matrix effect using actual text content instead of random symbols. This project was created with opencode, an AI coding assistant. Most of the implementation was generated by opencode—we orchestrated the high-level design and observed the code being written. Our role was guiding the vision and testing the results. ...