The United Kingdom of Mattielandia is a colossal, environmentally stunning nation, ruled by Mattie the Dog with an even hand, and notable for its daily referendums, keen interest in outer space, and restrictive gun laws. The compassionate, cheerful population of 7.775 billion Mattielandians enjoy extensive civil rights and enjoy a level of social equality free from the usual accompanying government corruption.

The enormous, liberal, socially-minded government juggles the competing demands of Education, Administration, and Healthcare. It meets to discuss matters of state in the capital city of Grey City. The average income tax rate is 97.1%.

The frighteningly efficient Mattielandian economy, worth a remarkable 1,283 trillion Doodles a year, is driven entirely by a combination of government and state-owned industry, with private enterprise illegal. The industrial sector, which is highly specialized, is mostly made up of the Information Technology industry, with significant contributions from Book Publishing and Tourism. Average income is an impressive 165,112 Doodles, and distributed extremely evenly, with practically no difference between the richest and poorest citizens.

Occam's razor has sliced to pieces any childhood belief in Santa Claus and the Tooth Fairy, the official Mattielandian Phrase Book weighs as much as a small child, the aphorism "there's no need to argue" has been dismissed by Mattielandians, and the dwindling faithful in the nation make expensive pilgrimages to the remaining places of worship. Crime, especially youth-related, is totally unknown. Mattielandia's national animal is the Greyhound, which frolics freely in the nation's many lush forests.

Mattielandia is ranked 2,567^th in the world and 3^rd in Karma for Most Cheerful Citizens, with 67.47 Percentage Of Water Glasses Perceived Half-Full.