Hearts of Iron gets better with each installment from Paradox, and this is a great place for the series to end up.

User Rating: 9.5 | Hearts of Iron II: Doomsday PC
Hearts of Iron 2: Doomsday is an amazing Grand Strategy World War 2 wargame. If you've been searching for a great grand strategy game for the WW2 time period, this is your game. The added elements of the Postwar period and Intelligence in this game adds a final piece to a great game and makes for an immensely rewarding experience. The replayability is almost unheard of among modern 40 hour titles released today, and I can't could the number of hours I've spent conquering or liberating the world from the masses in this game. The enjoyment of seeing your Nationalist Chinese finish their conquest of Eurasia in Madrid, or your Nazis finish off the Allies in North America is wonderful. Germany, France, Poland, England, America, Japan, Soviet Union, Nationalist China, Italy, play them all and see how much of the World you can conquer, liberate, or whatever other goal you set for yourself, as this game is open ended. You decide your goals, and you accomplish them.