Snake's Revenge is a stealth action-adventure video game produced by Konami for the Nintendo Entertainment System in 1990. It is a stand-alone sequel to Metal Gear that was released in North America and the PAL region following the international commercial success of the NES version. The game was produced without the involvement of series creator Hideo Kojima, who went on to develop a separate sequel for the MSX2 titled Metal Gear 2: Solid Snake, which was released later during the same year in Japan.

Metal Gear is an action-adventure stealth video game developed and published by Konami for the MSX2. It was released for the system in Japan and parts of Europe in 1987. Considered the game to popularize the stealth game genre, it was the first video game to be fully developed by Hideo Kojima, who would go on to direct most of the games in the Metal Gear series. A reworked port of the game was released for the Famicom a few months later, which later saw release in international markets for the NES over the following two years; this version was developed without Kojima's involvement and features drastically altered level designs, among other changes. An emulated Famicom version came with the special edition of Metal Gear Solid: The Twin Snakes on GameCube. A more faithful port of the MSX2 version was later included in Metal Gear Solid 3: Subsistence for the PlayStation 2, as well as in the HD Edition of the same game released for the PlayStation 3, Xbox 360 and PlayStation Vita, with these newer ports featuring a revised translation and additional gameplay features. The MSX version was also released for Wii Virtual Console and PC.