The Most Serene Republic of Roisin Dubh is a colossal, cultured nation, ruled by His Most Serene Mark with an even hand, and remarkable for its museums and concert halls, ban on automobiles, and free-roaming dinosaurs. The compassionate, democratic, cheerful population of 8.234 billion Roisin Dubhians enjoy extensive civil rights and enjoy a level of social equality free from the usual accompanying government corruption.

The government — a sprawling, bureaucracy-choked, socially-minded morass — juggles the competing demands of Education, Administration, and Environment. It meets to discuss matters of state in the capital city of Tír na nÓg. The average income tax rate is 99.1%.

The frighteningly efficient Roisin Dubhian economy, worth a remarkable 1,306 trillion Florins a year, is driven entirely by a combination of government and state-owned industry, with private enterprise illegal. The industrial sector, which is quite specialized, is mostly made up of the Tourism industry, with significant contributions from Book Publishing, Basket Weaving, and Information Technology. Average income is an impressive 158,715 Florins, and distributed extremely evenly, with practically no difference between the richest and poorest citizens.

Torture is illegal, the nation's politicians are known more for the internet memes they spawn than any of their accomplishments, politicians tend to jump ship to whichever party is currently leading in the polls, and doctors prescribe medicines but they rarely dispense hope or compassion. Crime, especially youth-related, is totally unknown, thanks to a very well-funded police force and progressive social policies in education and welfare. Roisin Dubh's national animal is the Wolf, which frolics freely in the nation's many lush forests.

Roisin Dubh is ranked 289,710^th in the world and 597^th in A Taco Paradise for Largest Automobile Manufacturing Sector, scoring -21.82 on the Henry Ford Productivity Index.