Civ 4 a spectacular game, worth the money. Civ 4 gives more to the gamer in the aspect of gameplay , its just great.
The contrlos that the creators of civ 4 have implicated is similar to civ3 theres the movement aspects of the gameplay, you the player has the option of moving there units in either a stack formation a single formation a same unit stack formation and the formation of all units on the selected square formation. When performing tasks with you military units or either your workers or just building a unit or building, The game uses the same in game interface to civ 3 so if a civ fan youll find it easy to navigate th game.
When it come to controlling a worker you have a much wider variety of options one such option is when you can choose to automate the worker but you also have a sub option of city improvements, build trade network, connect cities and more.
with the military units i found it dissapointing further on in the game when you couldnt use icbms anymore, you can stil use them but you actually damage a citie, the is due to the research of satellites wich act as defence and always shoot down you icbm before contact.
the civ4 interface is easy to navigate through you can find the custom game, scenario game and options screens very easy, if you want a to add play a mod you ahve access to you simply go to advanced then select mod then select the mod you wish to use.
If youve played civ 3 you would of been pretty dissapointed with the graphics, but not with civ 4 the colourful and well rendered surroundings and units give a good feel to the game. a simple improvement such as this give a better look toa agme which will help it appeal to gamers. The only dissapointment i found with the graphics was the framerate and the badlag you will get if the game has too much going on, but this will probably not affect the newer systems but will affect the older.
overall civ 4 is a game that i would suggest you buy or at least test out. it will help ypu enjoy the genre that is turn based strategy gaming.