This paper presents an algorithm to calculate the amount of gold required to birbe a city (A.K.A. incite a revolt). The algorithm is divided into two sections, the basic formula and multipliers.

Cost to Incite Revolt = City Size * Wealth of Civ * Proximity to Capital

• City Size = from 0 to 35.
• Wealth of Civ = 1 + Treasury/1000. The revolting civ's treasury.
• Proximity to Capital = 1000/(Distance+3). Where distance is the number of squares between dip/spy and the capital of the revolting civ. Distance is never greater then 16 and subject to several distance modifiers.
  • The Courthouse improvement halves the Distance (rounded down).
  • When the bribing civilization operates under Communism the maximum Distance is reduced to ten.

The Cost to Incite Revolt is adjusted by the following cumulative modifiers.

• A Spy incites revolts at 5/6 the price of a diplomat.
• A Veteran Spy incites revolts at 2/3 the price of a diplomat.
• Disorder in the revolting city reduces the price by 1/2.
• No Units in the revolting city also reduces the price by 1/2.
• The Previous Owner of a city can incite a revolt at 1/2 price.

Operating under Democracy grants civilization immunity to bribery.

Palace improvement makes the city unbribable.

All the contributors on the Apolyton Strategy Forum, who's discussions and discoveries have broadened the understanding of bribery in civ2.