The Revolutionary Republic of Kartan is a mammoth, environmentally stunning nation, ruled by Central Recursive Core with an iron fist, and notable for its infamous sell-swords, sprawling nuclear power plants, and multi-spousal wedding ceremonies. The compassionate, cynical, cheerful population of 8.732 billion Kartanians are proud of their wide-ranging civil freedoms, and those who aren't tend to be dragged off the streets by men in dark suits and hustled into cars with tinted windows.

The medium-sized, corrupt, well-organized government prioritizes Industry, with Education, Welfare, and Environment also on the agenda, while Spirituality and International Aid receive no funds. It meets to discuss matters of state in the capital city of Nexus. The average income tax rate is 46.9%, but much higher for the wealthy.

The frighteningly efficient Kartanian economy, worth a remarkable 1,355 trillion Energy Credits a year, is driven entirely by a combination of government and state-owned industry, with private enterprise illegal. However, for those in the know, there is a large, well-organized, fairly diversified black market in Information Technology, Tourism, Beef-Based Agriculture, and Retail. The private sector mostly consists of enterprising ten-year-olds selling lemonade on the sidewalk, but the government is looking at stamping this out. Average income is an impressive 155,258 Energy Credits, and evenly distributed, with the richest citizens earning only 2.1 times as much as the poorest.

Builders across Kartan are blocked up with orders for new public loos, intelligence analysts spend most of their time looking at embarrassing photos on social media sites, the future is monochrome, and city-slickers are jelly of all the farmland the government is giving away. Crime, especially youth-related, is all-pervasive, perhaps because of the country's complete lack of prisons. Kartan's national animal is the Sentinel, which is also the nation's favorite main course, and its national religion is Dao of the Machine.

Kartan is ranked 101,937^th in the world and 32^nd in Eientei Gensokyo for Highest Average Tax Rates, with 46.86 Effective Tax Rate.