The Res Publica Sanctus of Deus Sol Invicto is a gargantuan, cultured nation, ruled by Caesar Augustus Ry with an even hand, and notable for its museums and concert halls, frequent executions, and punitive income tax rates. The hard-nosed, hard-working, cheerful population of 44.173 billion Mithrasists have some civil rights, but not too many, enjoy the freedom to spend their money however they like, to a point, and look forward to their next free and open election, to be held on an as-yet unannounced date.

The medium-sized government juggles the competing demands of Education, Healthcare, and Environment. It meets to discuss matters of state in the capital city of Mithraeum. The average income tax rate is 51.8%, and even higher for the wealthy.

The thriving Mithraic economy, worth a remarkable 4,232 trillion denariis a year, is quite specialized and mostly made up of the Book Publishing industry, with significant contributions from Arms Manufacturing, Soda Sales, and Tourism. Black market activity is frequent. State-owned companies are common. Average income is 95,825 denariis, and distributed extremely evenly, with little difference between the richest and poorest citizens.

Raver DJ XStacy holds multiple medical degrees in chillaxing, nature magazines featuring stick insects on their covers are sometimes mistaken for fashion magazines, customers who are not the epitome of politeness always find themselves at the back of the queue, and the nation grinds to a halt for afternoon tea. Crime is pervasive, probably because of the absence of a police force. Deus Sol Invicto's national animal is the Pullus Cibus, which is also the nation's favorite main course, and its national religion is Mithraism.

Deus Sol Invicto is ranked 247,063^rd in the world and 3^rd in Hadrians Wall for Largest Cheese Export Sector, scoring -2.53 on the Mozzarella Productivity Index.