What is The Matrix Online?
Sorry, I couldn’t help myself. It’s plain to most people what it is: it’s Monolith’s MMORPG set in the universe of Warner Brothers’ Matrix films.

Specifically, it deals with the aftermath of The Matrix Revolutions. Without spoiling anything directly, the setting makes a chaotic world full of Neo-wannabes halfway plausible, and gives players the option to ally with any of the major factions, or no faction at all.