kaiserreich

Kaiserreich: Legacy of the Weltkrieg is a mod for the Hearts of Iron series of games (specifically II, Darkest Hour and IV), set in an alternate timeline where the Central Powers won World War 1, with the German Empire becoming a major Super Power, the Russian Communist Revolution failing, France and Britain's governments being overthrown by a new socialist movement called Syndicalism, and the United States staying neutral during the war.

The mod has been praised by fans for its rich lore and unfolding stories, having been in development since 2005.