The Rockopolis of Rock Mice is a gargantuan, safe nation, notable for its state-planned economy, absence of drug laws, and punitive income tax rates. The hard-nosed, cynical population of 41.603 billion Rock Miceans are ruled by a mostly-benevolent dictator, who grants the populace the freedom to live their own lives but watches carefully for anyone to slip up.

The enormous, well-organized government juggles the competing demands of Industry, Education, and Law & Order. The average income tax rate is 68.5%, and even higher for the wealthy.

The strong Rock Micean economy, worth a remarkable 1,998 trillion nuggets 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 Automobile Manufacturing industry, with significant contributions from Retail, Beef-Based Agriculture, and Gambling. Average income is 48,030 nuggets, and evenly distributed, with the richest citizens earning only 2.4 times as much as the poorest.

It is illegal to make racist remarks in public, a nation-wide cull of rock mouses is in effect, the automotive industry soaks up huge government handouts, and the latest Harry Potter book is a bestseller. Crime is totally unknown, thanks to a very well-funded police force and progressive social policies in education and welfare. Rock Mice's national animal is the rock mouse, which frolics freely in the nation's many lush forests.

Rock Mice is ranked 123,949^th in the world and 1^st in Islyan Plains for Lowest Crime Rates, with 63.31 law-abiding acts per hour.