In Europa Universalis II, warscore (abbreviated WS) is a number which quantifies how well a war is going. It is used only for computing peace treaties: what a side can ask for (or must offer), and what an enemy is likely to accept. When war is declared, warscore is zero. It then changes depending on the war. Ordinarily, warscore ranges from -99 to +99. In this range, warscore is determined from two sources: When you offer a peace treaty, the first screen will tell you what the warscore is. By hovering over it, you can get a tooltip showing the breakdown.