Metal Gear: Ghost Babel (メタルギア ゴーストバベル Metaru Gia: Gōsuto Baberu), released in Western territories under the title of Metal Gear Solid, is a 2D stealth action game produced by Konami that was released for the Game Boy Color in 2000. Ghost Babel was produced by Konami Computer Entertainment Japan after they were commissioned by Konami's European branch to develop a portable adaptation of their 1998 PlayStation game Metal Gear Solid. The game is not part of the mainline Metal Gear series, but rather it is set in an alternate continuity seven years after the events of the original Metal Gear.