I was not fortunate enough to play the first 2 in the series, but was introduced to 4X in MoO3. I absolutely loved it! I played co-op with some friends of mine, and it made for some memorable evenings. Yes, it has an insanely steep learning curve, and it's complicated and difficult to master; but that's what makes it all the more rewarding when your fleets are finally rampaging across the galaxy. I have happily sunk hours and hours into this game, and the only reason I have to not buy it is that I am too scared I will lose too much sleep reliving the building of a master race!
