|Tom Clancy's Splinter Cell: Chaos Theory is a stealth game developed by Ubisoft and released across all sixth-generation video game platforms in March 2005. Though originally slated for release in the fall of 2004, it was delayed until the following spring when it came out for the Xbox, PlayStation 2, GameCube and Microsoft Windows. Handheld versions for the Nintendo DS, Mobile phone and N-Gage were also released. A Game Boy Advance port was planned, but later cancelled.
Chaos Theory is the third game in the Splinter Cell series endorsed by novelist Tom Clancy. As with previous entries in the franchise, Chaos Theory follows the activities of Sam Fisher, an agent working for a covert-ops branch within the NSA called "Third Echelon". The game has a significantly darker tone than its predecessors, featuring more combat and the option for Fisher to kill people he interrogates as opposed to simply knocking them out. As a result, it was the first Splinter Cell game to receive an M-rating by the ESRB, an assessment which has since been applied to all subsequent releases in the series.