Simple enough that you don't get drowned in details, and addicting as hell!
Its the better old strategy game I ever played.... I really still spending some hours playing. And I have a Dual core 3.0, 256 video, and 2gb ram... but I still playing since I had my 486 100Mhz, 32Mb ram... Its a great game
I believe this was my first strategy game and it certainly was a good one. I remember part II was distinctly better (as expected) but this definitely got me hooked on this genre for a long time.
Great game. Obsolete after 2 came out though. 2 improved on it in every way.