Corruption and Waste

23:10 In Civilization 3, corruption is the share of a city's commerce that never reaches your treasury and waste is the share of its shields that never reach production; both grow with the city's distance from your capital and, under most governments, with the number of cities you own, per the 2001 manual (pp. 124-130) and Prima's official strategy guide (pp. 59-60). The capital loses nothing. Courthouses, the Forbidden Palace, a more advanced government, the Commercial trait and a city celebrating We Love the King Day all reduce it. The designers turned corruption up to stop players from filling the map with small cities, and both of them later regretted it: lead designer Jeff Briggs told PC Gamer in 2020, "I wish I had removed it from Civ III altogether."

Quick facts

How corruption and waste work

Every city outside the capital loses part of its output. The Complete manual (pp. 135-136) says production "is often lost to waste" and commerce "can also be lost to corruption", and that both depend on your government and on the distance from the city to your capital.

7:40 Three things set how much a city loses, per Prima's guide (pp. 59-60):

• Government. Each government has its own level, from the 2001 manual's "rampant" under Despotism to "minimal" under Democracy.
• Distance from the capital. "The farther away from your capital, the higher the city's corruption and waste." The Forbidden Palace counts as a second capital for this.
• Number of cities. Corruption and waste rise "incrementally": the more cities you have, the worse every one of them gets. The 2001 manual names this factor for Despotism, Communism and the Republic.

4:28 Difficulty adds to it as well: Prima lists higher corruption among the effects of harder levels (Prima, p. 15; see Difficulty Levels).

No source read for this page prints the formula, the distance steps or an "optimal number of cities" per map size. The official manuals and Prima's guide give the factors only in words, so any exact number of cities that avoids extra corruption is not given here.

Corruption by government

Source: 2001 manual, pp. 126-131.

Communism is the special case. State control "does standardize the loss of commerce and shields", so a city at the far edge of the empire loses as much as one next to the capital, and Prima calls the result a "considerably lower overall rate" than Monarchy's (Prima, p. 58). Prima recommends Communism for conquest; Governments compares the rest.

How to reduce corruption

The single biggest lever is government. Prima calls changing to a government with low corruption "the best overall method" to counter it (Prima, p. 60): Republic and Democracy lose the least.

4:30 Courthouses cut a city's corruption and waste by 50 percent, per Prima, and cost 80 shields and 1 gold a turn after Code of Laws (Prima, pp. 60, 120). A Courthouse also makes the city harder to win over with propaganda (Complete manual, pp. 168-169). The manual presents it as a trade-off, asking whether a Courthouse "would provide more benefit than a Cathedral" (p. 142); see City Improvements.

8:42 The Forbidden Palace "lowers corruption as if it were a second capital" (Complete manual, p. 131). It is a Small Wonder that costs 220 shields and needs 8 cities, per Prima's table, and like other Small Wonders it is destroyed if the city is captured. Built far from your Palace, it gives a second core of low-corruption cities.

The Secret Police Headquarters, added by Conquests, acts as a second Forbidden Palace for Communist civilizations only (Complete manual, p. 131), giving a Communist empire three centers. The Police Station, a Communist city improvement, reduces war weariness in its city in the base game (Prima, p. 121); whether it also cuts corruption in Conquests is not stated in any source read.

The Commercial trait lowers corruption and gives large cities extra commerce (Complete manual, p. 26; see Civilization Traits).

We Love the King Day helps a city that celebrates it. The Complete manual says an ongoing celebration "lowers the levels of corruption and waste" (p. 151), while Prima's 2001 guide says it lowers waste "but not corruption" (p. 60). The conditions are on Happiness and War Weariness.

17:41 Where you build matters too, because cities close to the Palace or the Forbidden Palace lose less; City Placement and Expansion covers what the sources say about spacing.

Why Civ 3 has so much corruption

11:38 Corruption was turned up on purpose. Soren Johnson, Civ 3's co-designer, explained in the Civilization 4 manual's afterword (p. 177) that "Infinite City Sprawl" (ICS, the fans' term) meant the best strategy in Civ games "had always been to build as many cities as possible". Corruption and waste were meant to add diminishing returns, so that "your 20th city would be much less productive than your 10th", and "in the first version of Civ III we turned corruption up significantly" to end ICS.

It worked, and players hated it. Johnson wrote that the change did end tightly packed cities, "but it was also the number one complaint raised against the game": there was nothing fun about founding a city that "can only ever produce one shield per turn" (same afterword, p. 177).

Briggs, the lead designer, agreed in 2020. Corruption and waste had been part of Civilization and Civilization 2 too, he told PC Gamer, and he did not recall it "ever coming up during development as a problem": "I think we all just accepted it as a part of the system and we were a little afraid to mess with it. Oops." His conclusion: "I wish I had removed it from Civ III altogether" (PC Gamer, Apr 6, 2020).

What Civilization 4 did instead

Civilization 4 removed corruption and waste, or "more accurately, never coded them to begin with", Johnson wrote, and used city maintenance instead: a flat gold cost per city that rises with the size of the empire, so a weak city becomes a net loss without crippling the rest (Civilization 4 manual, p. 177). In 2023 he looked back at the series' brakes on sprawl: "Civ 3 had Corruption, Civ 4 had Maintenance, Civ 5 had Global Unhappiness", all of them, in his words, "unfun bandaids" (Designer Notes, Mar 31, 2023). Civilization 3 vs 2 and 4 covers the other differences.

Frequently asked questions

How does corruption work in Civ 3? In Civilization 3, corruption takes part of each city's commerce and waste part of its shields; both rise with the city's distance from the capital and with the number of cities you own, and depend on your government, while the capital itself has none.

How do you reduce corruption in Civ 3? In Civilization 3, build Courthouses (which halve it, per Prima's guide), build the Forbidden Palace as a second capital, switch to a Republic or Democracy, keep cities celebrating We Love the King Day, or play a Commercial civilization.

Where should I build the Forbidden Palace in Civ 3? Civilization 3's Forbidden Palace lowers corruption as if it were a second capital, so it helps most in a group of cities far from your Palace; it needs 8 cities and costs 220 shields per Prima's guide.

What is the optimal number of cities in Civ 3? Neither the Civilization 3 manuals nor Prima's official guide print an optimal number of cities or the corruption formula; they say only that corruption rises with the number of cities and their distance from the capital.

Which government has the least corruption in Civ 3? In Civilization 3, Democracy has the least corruption and waste, then Republic, Communism, Monarchy and Despotism, per Prima's official guide; Communism makes it the same in every city regardless of distance.

Why is corruption so bad in Civ 3? Civilization 3's designers turned corruption up on purpose to stop "Infinite City Sprawl"; co-designer Soren Johnson later called it the number one complaint about the game, and lead designer Jeff Briggs said he wished he had removed it.

Does Civ 4 have corruption? No: Civilization 4 removed corruption and waste and charges city maintenance instead, a gold cost per city that rises with the size of the empire.

Sources

• Civilization III manual, First Edition (archive.org copy), Infogrames and Firaxis Games, Sep 2001
• Sid Meier's Civilization III Complete manual (Steam-hosted PDF), Atari and Firaxis Games, 2005
• Sid Meier's Civilization III: Prima's Official Strategy Guide (archive.org copy), Prima Games (David Ellis), 2001
• Sid Meier's Civilization IV manual, "Afterwords by Soren Johnson", 2K Games and Firaxis Games, 2005
• The complete history of Civilization, page 3, PC Gamer (Fraser Brown), Apr 6, 2020
• My Elephant in the Room, Part 1, Designer Notes (Soren Johnson), Mar 31, 2023
• How To Play Your First Game Of Civ 3, Suede, Feb 12, 2020 (video)
• 6 Civ 3 Gameplay Mechanics That Are Hard To Explain, Suede, Sep 4, 2022 (video)
• Explaining The Difficulty Levels Of Civ 3, Suede, Jul 27, 2019 (video)
• Top 6 Essential Buildings In Civ 3, Suede, Feb 9, 2021 (video)
• Civilization 3: Everything you need to know, Suede, Nov 12, 2025 (video)