Metal Gear first launched for MSX 2 in July 1987. Metal Gear Solid first launched for PlayStation in September 1998, followed by PC in September 2000. Metal Gear Solid 2: Substance, an enhanced version of the November 2001-released PlayStation 2 title Metal Gear Solid 2: Sons of Liberty, first launched for Xbox in November 2002 followed by PlayStation 2 in December 2002 and PC in March 2003.