History Line: 1914-1918 (released in USA by SSI as Great War: 1914-1918) is a turn-based tactics computer game developed in the 1990s by the German team Blue Byte Software. The storyline takes the player through various battles of the First World War. Source: Wikipedia, "http://en.wikipedia.org/wiki/History_Line:_1914-1918," available under the CC-BY-SA License.