Metal Gear Solid 4 is shaping up to be one of those games that define a console generation. If it should so manage, it would be quite a feat, as no Metal Gear game has really done so before (with perhaps Metal Gear Solid 2 coming closest). This newest trailer features a walkthrough of the game with narration explaining many of the new game mechanics. How does it look? Smooth and crisp, and like the console seller for the PS3 people expect it to be.