The Dominion of The Sublime State of Yamatai is a massive, genial nation, ruled by Empress Kotohime with an even hand, and renowned for its public floggings, free-roaming dinosaurs, and sprawling nuclear power plants. The compassionate, democratic, devout population of 1.347 billion Gensokyoans are fiercely patriotic and enjoy great social equality; they tend to view other, more capitalist countries as somewhat immoral and corrupt.

The large government juggles the competing demands of Administration, Spirituality, and Defense. It meets to discuss matters of state in the capital city of Sato. The average income tax rate is 60.7%, and even higher for the wealthy.

The local economy, worth 77.3 trillion mons a year, is driven entirely by a combination of government and state-owned industry, with private enterprise illegal. The industrial sector, which is fairly diversified, is led by the Uranium Mining industry, with major contributions from Beef-Based Agriculture, Arms Manufacturing, and Woodchip Exports. Average income is 57,376 mons, and distributed extremely evenly, with little difference between the richest and poorest citizens.

A degree in Empress Kotohime Science with a Minor in Awesomeology starts many political careers, unpopular politicians are often caught between a rock and a hard place, recognised healthcare professionals treat diabetes with a grain of sugar in a barrel of water, and one does not simply walk into the tundra. Crime, especially youth-related, is totally unknown, thanks to a capable police force and progressive social policies in education and welfare. The Sublime State of Yamatai's national animal is the Haishaku, which teeters on the brink of extinction due to widespread deforestation, and its national religion is Shintoism.

The Sublime State of Yamatai is ranked 47,285^th in the world and 49^th in Eientei Gensokyo for Safest, scoring 103.59 on the Bubble-Rapp Safety Rating.