I've spent so many hours on this game, and it was fun.
Actually, it's a good thing GOG doesn't have any payment options I currently can use, and i'm missing one of the old disks (next to that, I don't think the original installation works with windows 7 anyway).
Strategic planning, logistics, people management, city layout management, it was all there, it looked good and you had to take many things into account for feeding your people, like the ebb and flow of the nile river, graneries, bazaars, gold mining, trade etc etc. It's addictive, it's fun and when I look at it, the graphics might be dated, but the mechanics underneath are great.
For a little bit more fun, different colours and greek mythology, try Zeus Master of Olympus and the slightly less realistic expansion Poseidon.