Kaiserreich: Legacy of the Weltkrieg is a renowned total conversion mod for the strategy game Hearts of Iron IV, set in a world where the Central Powers triumphed in the First World War. The meme culture surrounding it stems from the mod's deep lore, complex political paths, and larger-than-life historical figures like Huey Long and Oswald Mosley. Players frequently meme the chaotic Second American Civil War and the constant threat of syndicalist revolutions across Europe. These memes often blend historical irony with the specific mechanical quirks of Paradox Interactive games, making Kaiserreich a staple in the grand strategy and alternate history communities.