Enter the Matrix is the first video game based on The Matrix series of films. Its story was concurrent with that of The Matrix Reloaded, and featured over an hour of original footage, directed by The Wachowskis and starring the cast of the film trilogy, produced exclusively for the game. It sold one million copies in its first eighteen days of release, 2.5 million over the first six weeks, and ultimately 5 million copies.

First released in May 2003, the same month as The Matrix Reloaded, Enter the Matrix was simultaneously produced with The Matrix Reloaded and The Matrix Revolutions. It was developed by Shiny Entertainment, published by Atari and distributed by Warner Bros. Interactive Entertainment for the GameCube, Microsoft Windows, PlayStation 2 and Xbox.

The game was written and directed by the Wachowski brothers, and its plot is intertwined with that of the second movie, The Matrix Reloaded. Enter The Matrix casts the player as Niobe or Ghost, captain and first mate of the rebel ship Logos, respectively. Niobe is a master combatant, capable of beating up everyone in her way. She is an excellent pilot, both in the real world and in the Matrix. Ghost is very adept at firearms, and his marksmanship is a mastery. Both characters are very athletic, and throughout the game the player will have to walk, run, jump, strafe, peek, run on walls, climb ladders and pipes, and fight various enemies.