I found the formula here, but where do I find the cost of each Intel Project?
http://www.captainkwok.net/balancemodfaqs.php
Q: How does the Intelligence System work? Updated!
In the standard game, a project could only be successful if the selected intel project's cost was greater than the defending player's intel defense points - an all or nothing approach. All unused points under the standard system would accumulate.
In contrast, the Balance Mod uses a "leaky" intel system. A success percentage is calculated based on the number of attack points a player has, the project cost, and the number of defense points the target player has. The result is that even a weaker player may enjoy some intel success against a stronger player and makes it more difficult to overwhelm an opponent with intel alone. Defensive intel points do not accumulate between turns as it is assumed they are actively being used to deter intel operations by other players.
The success percentage of an intel project is determined as follows:
Success % = Attack Points / (Attack Points + Defense Points * 5 + Project Cost) * 100