I've never played the other Empire Earth games. I've heard they're great and look forward to buying them eventually. However, it seems that since I didn't play the others 2, I haven't played this game with any preconceptions from earlier titles. As far as the strategy goes, the game was quite fun, offering many ways to out-think your opponents, especially in a global game. I particularly like the factions system that they had (as it always struck me as odd that countries like Germany and France were "separate factions" usually, despite the almost parallel philosophies). The factions are broken into 3 major philosophical and ethnic groups: West, Middle-East, and Far-East. I have yet to buy this from gog.com, but have been contemplating it since my "out of the box" edition doesn't work on anything later than Windows XP (it glitches and crashes on vista and won't start on anything higher).