The Grand Duchy of Atreus is a massive, socially progressive nation, ruled by Duke Leto Atreides with an even hand, and notable for its barren, inhospitable landscape and compulsory military service. The hard-nosed, hard-working, democratic population of 3.943 billion Atreides 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 tiny government prioritizes Defense, with Welfare, Education, and Law & Order also on the agenda, while Industry and International Aid are ignored. It meets to discuss matters of state in the capital city of Caladan. The average income tax rate is 7.5%.

The Atreides economy, worth 235 trillion drachmas a year, is driven almost entirely by the private sector, which is broadly diversified and led by the Gambling industry, with major contributions from Pizza Delivery, Arms Manufacturing, and Door-to-door Insurance Sales. Average income is 59,779 drachmas, and evenly distributed, with the richest citizens earning only 4.9 times as much as the poorest.

Washing-up liquid looks and smells like baby poo, Brancalandian Brie isn't available anywhere in Atreus, citizens are less concerned with policy and more concerned with whether politicians "call 'em like they see 'em", and organ donation rates are among the lowest in the region. Crime is moderate, with the police force struggling against a lack of funding and a high mortality rate. Atreus's national animal is the hawk, which teeters on the brink of extinction due to toxic air pollution, and its national religion is Secher Nbiw.

Atreus is ranked 206,859^th in the world and 15^th in Dune for Most Scientifically Advanced, scoring 36.19 on the Kurzweil Singularity Index.