This is not the wrost game ever, but borrow it before...

User Rating: 8.5 | Sid Meier's Civilization III PC
First of lets look at the gameplay, Civ 3 featured classic civ style gameplay you have a settler and build a city , build workers , buildings, wonders and units. Most noticeable difference was that settlers required one unit of population from a city to found a new city - reasoning was that a group of people have to emigrate from the current population right? also it had another effect this being that it took longer for a player to build up their empires and so helped slow the pace of the initial 'colony rush' which so badly effects alot of strategy games (even today with games such as Galactic Civilizations II). Also building workers to construct tile improvements such as roads, irrigation and mines etc would also pause the population growth of a city again effecting how quickly one could build up a viable country.
Also concerning gameplay a civilization has a few characteristics which can effect gameplay, for example a city might be classed as scientific and get a free technology at the start of a new era or maybe sea faring and has bonus commerce at sea , this is a good implementation and was used to better degree in Alpha Centauri (yes Alpha Centauri had this first) the various factions had bonuses to law order , population growth research and so on, so I give a thumbs up to Civ 3 for having this feature.