Supreme Ruler: Cold War was developed by BattleGoat Studios and was officially announced August 19, 2010 by Paradox Interactive at the 2010 Gamescom video gaming convention held in Cologne, Germany and released on July 19, 2011. It is set during the Cold War Era from the end of World War II to the early 1990s. The main Campaign allows the player to be the head of either the USA or the USSR, while the Sandbox game mode can be played from any nation's point of view.