The first civ-games can be partly excluded since they had trade yield from tiles and traderoutes which could be turned into luxury/happiness via slider. City production allowed to build caravan units which could be turned into traderoutes with distant cities to increase trade and thus also luxury/happiness in the city (when luxury rate was not set to 0%). Civ is now 25 years old. In general all Civ games feature food and production as major tile yields with food being consumed by population/population growth and production being used to build military units, buildings and wonders. There is no such option to build an industry for consumer goods which can be traded or consumed by population providing contentedness / happiness, starting with a textile industry and developing into more modern types like an automobile industry or electronic industry. (Luxuries in Civ5 cannot compensate this since you get a luxury via improvement but not by working the tile. Also luxuries are not consumed like consumer goods but count as a limited happyness bonus.) Population working on tiles in Civ is compensated with just 2 Food to consume each turn. They do not seem to get any salary for their work nor can they sell any surplus food or production from their tile-yield on the market. A salary would allow them to accumulate wealth or buy luxuries from the market to increase their personal happiness. It would also allow taxation. If there is a city with high Food value and one with high Production value, in Civ games they cannot exchange food surplus and production surplus between the two cities. One will have a fast growing population of well-fed farmers but no production while the other will have a slow growing, almost starving population of high productive workers/miners. (Civ5 Trade-Routes do not count in this context since they do not transfer any food or production between cities, they simply create food/production like a joker and the jokers are limited. Partial exception is the caravan unit in Civ1 which allowed to contribute to production of other cities.) Colonization allowed to produce several goods including food, cotton, fur, tobacco, ore, tools and weapons but most goods were meant simply as trade goods for export to the european market and could not be consumed by the own population. Tools were required for improvements and high level buildings while horses and weapons were used to equip/create military units.