Metal Gear 2: Solid Snake

Synopsis
By 1999 the Cold War had thawed, and nuclear disarmament by the major world powers promised a bright beginning to the 21st century. Despite this, all was not well in the world. A series of shocks to the oil market spurred the development of new high-tech energy sources, including nuclear fusion power. However, most vehicles still relied on oil for power. A breakthrough solution is presented in Prague by Czech scientist Dr. Kio Marv: a type of algae which can produce petroleum-grade hydrocarbons. However, somewhere between the (presently known as) Czech Republic and the United States, he is kidnapped by forces belonging to the heavily fortified nation of "Zanzibar Land."

Solid Snake is sent in to rescue the scientist. He discovers that the nation's leaders plan to hold the world hostage through both the oil supply (now tied inexorably to Dr. Marv's research) and nuclear weapons (through a new form of Metal Gear). The man in the seat of power in Zanzibar Land is none other than Big Boss, and his newest lieutenant is Snake's old comrade Gray Fox. While Snake succeeds in destroying Metal Gear and bringing down Big Boss, he finds the blood of his best friend on his hands. Upon completing the mission, Snake leaves the military and disappears into the Alaskan wilderness to seek isolation and solitude.