Metal Gear Solid, released in Japan as Metal Gear: Ghost Babel, is a 2000 action-adventure stealth video game developed and published by Konami for the Game Boy Color. The game began development after Konami Computer Entertainment Japan were commissioned by Konami's European branch to develop a portable adaptation of their 1998 PlayStation game of the same title. However, the Game Boy Color version is not a port of the original PlayStation version, nor does it adapt the same story, but instead takes place in an alternative continuity set seven years after the events of the original Metal Gear (1987). Tose assisted on the development.

The Game Boy Color is an 8-bit handheld game console, manufactured by Nintendo, which was released in Japan on October 21, 1998, and to international markets that November. It is the successor to the Game Boy and is part of its product line. Compared to the original, the Game Boy Color features a color TFT screen rather than monochrome, a processor that operates twice as fast, and has four times as much memory. It retains backward compatibility with games initially developed for its predecessor. However, despite these improvements, reviewers consider the Game Boy Color an evolution rather than a revolutionary leap in handheld gaming technology.