From the review: "Metal Gear Solid 4" is a masterpiece. As the crowning achievement of the series' 20-year history, Hideo Kojima's final "Metal Gear Solid" title might not be what you expect, but it is everything you could hope for in a video game.
"MGS4" plays like the kind of game you always knew "Metal Gear" could be. The reinvented control scheme is the best thing that has happened to the series, giving combat a visceral and intuitive edge. Codec interactions are drastically reduced, which puts the focus on the stunning events happening right in front of you. Similar to games such as "Call of Duty 4" and "BioShock," "MGS4" makes excellent use of scripted events during game play, such as a rebel's execution or a robot crashing through a building. I doubt you'll even see them all in a single play-through."