Tom Clancys Splinter Cell: Double Agent (2006/RIP by dopeman)

Splinter Cell: Double Agent takes the stealth based series in a new direction after three successful covert operations on multiple platforms. After learning his teenage daughter was killed in a car crash, a despondent Sam Fisher is unable to complete his duties for the NSAs splinter cell, Third Echelon, and is reassigned as a NOC, a non official cover agent who operates from within dangerous organizations. His mission is to infiltrate a domestic terrorist group called the John Browns Army. For the first time in the series, Fisher cannot rely solely on his gadgets or the direct support of the NSA. He must instead fall back on his keen instincts to survive while working deep undercover.
Instead of advancing through linear missions across a series of international locales, players will experience a branching storyline with multiple endings, where decisions made at one juncture will influence subsequent events as the game progresses. Fisher must initially earn the trust of the John Browns Army to become a card carrying member, so he must engage in carefully orchestrated heists and even an elaborate prison break to get in the good graces of key contact Jamie Washington. If Fisher is successful in befriending Washington, he will be invited to the terrorist groups headquarters, a multi floor structure that serves as a jumping point for future missions.

From that point on, Fisher will be faced with multiple moral decisions as he walks a fine line between working with the JBA and on behalf of his NSA mentor, Irving Lambert. He will also be partnered with an AI controlled character in many of the missions, introducing a new element to the single player game. Of course, Splinter Cell: Double Agent also features online support, including cooperative play and the exclusive spies versus mercs mode with new moves, gadgets, and a revamped team ranking system. Both the Xbox 360 and PC versions also feature larger environments, interactive cut scenes, more on screen characters, alternate missions, and enhanced graphics when compared to the Xbox and PlayStation 2 games.

Features
Master new moves and melee attacks as master spy Sam Fisher
Work with a computer controlled partner in the single player campaign
Change the story line in different ways by making key decisions throughout the game
Engage in new elements like heists, prison breaks, and more
Complete mission objectives for the JBA and/or the NSA

MINIMUM PC REQUIREMENTS
Windows XP
3GHz Pentium 4/AMD Athlon 3000 Processor
1GB RAM
128MB ATI Radeon X1600/Nvidia GeForce 6600 Video Card
DirectX 9.0C Compatible Sound Card
4X DVD ROM Drive
8GB Hard Disk Space
DirectX 9.0C
MULTIPLAYER SYSTEM REQUIREMENTS
128 Kbps Broadband Connection