Algorithm (Age of Imperialism Map Game)

Military/66
==== Power:
 * Great Power: +30
 * Secondary Power: +20
 * Middle Power: +10
 * Small Power: +5
 * Extremely Large Empire: +30%
 * Large Empire: +20%
 * Empire: +10%
 * Small Empire : +5%
 * Trenches (Small border & for defender) +30%

====

Demographics/33
==== ====
 * X5 larger than enemy +20
 * X4 larger than enemy +15
 * X3 larger than enemy +10
 * X2 Larger than enemy +5
 * almost no difference +0
 * X2 smaller than enemy - 5
 * X3 smaller than enemy - 10
 * X4 smaller than enemy - 15
 * X5 smaller than enemy - 20
 * Ethnic groups:
 * More than 7: -30%
 * More than 5: -20%
 * More than 3 -10%

Technology/33
==== Take the mean of these
 * Advanced +20
 * Good +15
 * Bad +10
 * Tribal +5
 * (If Tribal) +20% if contact with Europeans.

(((winner score*100)-(loser score*100)*2)-1 ====

Also see- Age of Imperialism (Map Game)