The Empire of Great Umamusume is a massive, efficient nation, ruled by Symboli Rudolf with an even hand, and renowned for its national health service, aversion to nipples, and irreverence towards religion. The hard-nosed, hard-working, cynical population of 1.692 billion Umamusumeans have some civil rights, but not too many, enjoy the freedom to spend their money however they like, to a point, and take part in free and open elections, although not too often.

The medium-sized, corrupt government juggles the competing demands of Defense, Administration, and Industry. It meets to discuss matters of state in the capital city of Rudolfsburg. Citizens pay a flat income tax of 44.7%.

The frighteningly efficient Great Umamusumean economy, worth 311 trillion marks a year, is broadly diversified and led by the Information Technology industry, with major contributions from Arms Manufacturing, Retail, and Book Publishing. Black market activity is frequent. Average income is an impressive 184,041 marks, with the richest citizens earning 5.7 times as much as the poorest.

In the Beginning was the Word and the Word was "Pragmatism", citizens must pay to enjoy Great Umamusume's pristine beaches, notable individuals are granted land and titles, and school kids who pretend to drive imaginary cars get a social worker and a police observer assigned to them. Crime, especially youth-related, is totally unknown, thanks to a capable police force and progressive social policies in education and welfare. Great Umamusume's national animal is the horse, which teeters on the brink of extinction due to widespread deforestation, and its national religion is Rudolfianism.

Great Umamusume is ranked 183,752^nd in the world and 90^th in Japan for Largest Populations, with 1.69 billion capita.