The Fiefdom of Hylonomus is a colossal, safe nation, remarkable for its barren, inhospitable landscape, irreverence towards religion, and suspicion of poets. The hard-working, democratic population of 4.717 billion Hylonomusians 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 relatively small government prioritizes Defense, although Law & Order, Administration, and Education are also considered important. The average income tax rate is 17.7%.

The Hylonomusian economy, worth 236 trillion Delta Eagles a year, is fairly diversified and led by the Arms Manufacturing industry, with major contributions from Gambling, Soda Sales, and Cheese Exports. State-owned companies are reasonably common. Average income is 50,045 Delta Eagles, and evenly distributed, with the richest citizens earning only 3.9 times as much as the poorest.

Public footpaths are being slowly eroded by the burgeoning number of ramblers, the colors pink and purple are banned from military unit insignia, endangered species are effective hostages against the Hylonomusian military, and the election for Leader's office's janitor is heating up. Crime, especially youth-related, is relatively low, thanks to a capable police force and progressive social policies in education and welfare. Hylonomus's national animal is the Kitsune, which teeters on the brink of extinction due to widespread deforestation.

Hylonomus is ranked 199,126^th in the world and 3^rd in Irvine for Most Scientifically Advanced, scoring 55.23 on the Kurzweil Singularity Index.