Tom Clancy's Splinter Cell: Chaos Theory is a stealth video game developed for Microsoft Xbox, belonging to the genre of action-adventure with a heavy emphasis on stealth tactics. Released in 2005, players control Sam Fisher, a skilled black-ops agent of the NSA's secretive Third Echelon division. The immersive espionage adventure tasks players with using stealth maneuvers, high-tech gadgets, and strategy to infiltrate secure locations, avoid detection, gather intelligence, and neutralize threats posed by terrorists to international security.