Following "Metal Gear 2"s completion, Kojima worked on other projects before directing his third "Metal Gear" game, "Metal Gear Solid", for the PlayStation. It began development in 1994 and debuted at the 1996 Tokyo Game Show, before being released in 1998. The success of "Metal Gear Solid" resulted in a series of sequels, prequels, spin-offs, ports, and remakes for Microsoft Windows, the Game Boy Color, PlayStation 2, Xbox, GameCube, PlayStation 3, PlayStation Portable, PlayStation Vita, Xbox 360, Nintendo 3DS, PlayStation 4, and Xbox One. "Metal Gear Solid" was followed up by the sequel ' released in November 2001 for the PlayStation 2. A remake of the original "Metal Gear Solid" called ' was made for the Nintendo GameCube in early 2004. Later that year, the third numbered entry, ', was released on the PlayStation 2. This is the first prequel which was set prior to all the previously released Metal Gear games and which acted as an origin to the franchise. These games were followed by a sequel to "Snake Eater," ', which was released on the PlayStation Portable in 2006. The series' main storyline was concluded in "" for the PlayStation 3 in 2008. The game featured a multiplayer spin-off called "Metal Gear Online".