1987 · Stealth / Action · MSX2 / NES
Metal Gear (1987) is Hideo Kojima's MSX2 stealth game: Solid Snake infiltrates Outer Heaven, avoiding guards rather than fighting them.
Solid Snake is sent into the fortress of Outer Heaven to rescue a captured agent and destroy Metal Gear, a nuclear-armed walking tank. Guards see only in front of them, and being spotted raises the alarm, so Snake sneaks, hides and gathers equipment and keycards rather than fighting. The mission's final twist reveals who has really been directing it. Hideo Kojima's first game, it set out the 'tactical espionage action' formula; a Famicom version by a different team followed.
Metal Gear was designed by Hideo Kojima at Konami in 1987 for the MSX2 home computer. Kojima wanted to make an anti-war game where combat was the failure state — sneaking past enemies was always preferred over fighting. The game introduced the "tactical espionage action" concept, where players gathered intelligence, used environment, and avoided conflict. Kojima had been assigned to create the game as a junior designer; it became his defining work.