Showdown! is a a 76-page book designed to complement the Agents of SMERSH base game, and the Swagman's Hope and Space Station expansions. The Showdown! Scenario Book presents a linear history that will take the players through a series of eight Agents of SMERSH games, which get progressively more difficult as the UN Secret Service pursues Dr Lobo. Showdown! also introduces a new Endgame for Agents of SMERSH, which can be played after any Main Game (i.e. the board game), even if you are not using the linear scenarios.