The Republic of Mercia Regnum is a colossal, environmentally stunning nation, ruled by MatBoyler with an even hand, and notable for its keen interest in outer space, ubiquitous missile silos, and enslaved workforce. The hard-nosed, humorless, devout population of 5.336 billion Mercians are fiercely patriotic and enjoy great social equality; they tend to view other, more capitalist countries as somewhat immoral and corrupt.

The medium-sized, corrupt government juggles the competing demands of Defense, Education, and Law & Order. It meets to discuss matters of state in the capital city of Tamworth. The average income tax rate is 70.4%, and even higher for the wealthy.

The frighteningly efficient Mercian economy, worth 719 trillion Pounds a year, is driven entirely by a combination of government and state-owned industry, with private enterprise illegal. The industrial sector is led by the Arms Manufacturing industry, with major contributions from Information Technology, Tourism, and Beef-Based Agriculture. Average income is an impressive 134,848 Pounds, and distributed extremely evenly, with little difference between the richest and poorest citizens.

Hidden bedroom-cams are installed to catch mothers doing their kids' homework, nobody looks each other in the eye at neighborhood block parties any more, victims of limb-mauling industrial accidents are told to keep working with their remaining hand, and human sacrifice to the metaphorical altar of Mammon ensures national prosperity. Crime, especially youth-related, is totally unknown, thanks to a well-funded police force and progressive social policies in education and welfare. Mercia Regnum's national animal is the Falcon, which is also the nation's favorite main course, and its national religion is Celtica.

Mercia Regnum is ranked 124,902^nd in the world and 2^nd in The Celtic Union of Celticae for Largest Black Market, with 258 billion Standard Monetary Units.