Hideo Kojima designed the original "Metal Gear", which debuted in Japan and Europe in 1987 for the MSX2 computer platform. A separate team created a heavily modified Nintendo Entertainment System (NES) port of the game that was released in Japan on December 22, 1987, North America in June 1988, and Europe and Australia sometime in 1989. Konami produced an NES sequel, "Snake's Revenge", again without Kojima, released in North America and Europe in 1990. One of that game's designers became acquainted with Kojima and asked him to create a "real "Metal Gear" sequel". In reaction, Kojima began development of "", which was released in Japan in 1990 for the MSX2.