"Metal Gear Solid 2: Sons of Liberty (commonly abbreviated as MGS2) is a stealth action video game directed by Hideo Kojima, developed by Konami Computer Entertainment Japan and published by Konami for the PlayStation 2 in 2001. It is the fourth Metal Gear game produced and directed by Kojima and the direct sequel to Metal Gear Solid. Its release was followed by an expanded edition, Metal Gear Solid 2: Substance for PlayStation 2, Xbox and Windows. Metal Gear Solid 3: Snake Eater, a prequel to the entire Metal Gear series, followed in 2004. In 2008, a direct sequel, Metal Gear Solid 4: Guns of the Patriots was released." Source: Wikipedia, "Metal_Gear_Solid_2:_Sons_of_Liberty," available under the CC-BY-SA License.