Played the demo and loved it.
My dad loves Civ 3 the most, so I don't know how much he'll enjoy it, but this is my favorite one yet.
The Demo kinda pisses me off though, because it ends just before me and some AI are about to own some bichuz 
civ III is about 300% time better than Civ IV, imo. I shall buy civ 5, but tell me: is it closer to civ 3, civ 4, or civ 6

(new, better)
if it's as cluttered and different from civ3 than civ4 I might not like it.
alpha centauri was made before civ III, but I like it too.
p.s. civ3 gold edition is selling in the us (in some places, anyways) still. its got multiplayer too!