I have completed my first game, played a standard sized map on normal level. Won by cultural conquest after 3-4 hours of playing.
Have to say I was quite disappointed. The game was pretty much the same as the first GC. The tech tree, is also pretty much the same as GC1 appart from the three types of attack and defence. It has the same trade goods and galatic wonders for example.
Fundamentally the game has not changed, I have paid $45 for an ok update to the graphics and a minor gameplay change to the combat damge system. Both of which I could live without.
This 'sequal' in my opinion is nothing compared to the CIV4, which feels like a new game and is definately worth the money. Does anyone else feel they have been duped as well? Or am I missing something?