Sam Fisher's third outing still stands tall as the franchise's best entry, featuring a pitch-perfect balance between raw stealth and a great implementation of player choice. Ubi allows Chaos Theory to spin out within itself, creating a sense of player improvisation that we could use more of in today's market. Chaos Theory is one of the best examples of a game giving a player a problem, then allowing them to choose a path to solve it. Where the first Splinter Cell title was a revolution for the stealth genre, 2005's Chaos Theory was the beginning of a new direction for the franchise itself. The genre had become a little crowded by the time the first Splinter Cell came out in 2002, and it still managed to make its own unique identity. Chaos Theory expanded upon that even further, refining everything into one of the slickest stealth experiences of all time.