Metal Gear Solid 2: Sons of Liberty

In 2007, two years after the Shadow Moses incident, Solid Snake - now working for a freelance organization known as Philanthropy - infiltrates the oil tanker U.S.S. Discovery, investigating the development of a new Metal Gear-type weapon. A confrontation with a Russian military group as well as an old acquaintance from Snake's past adventure leads to a massive detonation, after which Snake is presumed dead.