On the corral topic: Both corrals and farms cost 100 wood to build. a female villager in the beginning gathers around 0.5 food/second from gathering from a farm, so a fully saturated farm can bring up 2.5 food/second. Female villagers cost 50 food each, so to fully saturate a farm, you need to invest 250 food. In order to improve the speed of food collection, you need to research plow, which costs the granary, which is 100 wood, plus the upgrade, which is 200 wood and 100 metal. I believe this tech improves farming rate by making a fully saturated farm bring 5 food/second. A corral costs 100 wood to build. A sheep costs 50 food, and takes 35 seconds to make, however there is an upgrade for 50 food that decreases that train time to 27 seconds. Citizen cavalry can gather food from sheep. Citizen cavalry can gather around 7.5 food/second. A sheep has 100 food. So, it takes roughly 15 seconds for a citizen cavalry to complete one sheep, so in order to have the citizen cavalry constantly working, you need a second corral, which costs another 100 wood. As expected, you pay 50 food per sheep, so you do need a good food supply in order to maintain sheep production. If we tally it up, two corrals being working by one citizen cavalry gathers around 100 food every 30 seconds. Getting this up and running costed in total: 200 wood 40 wood (For citizen cavalry) 100 food (Citizen cavalry) 50 food (upgrade) A constant 100 food per 27 seconds. 1 population point. One farm in the village phase that is being worked by five female villagers earns 75 food every 30 seconds. With the upgrade, the farm can earn 150 food every 30 seconds. However, getting the farm to be more efficient than the corral costed: 300 wood 100 metal 250 food (For villagers) 5 population points. In the long run, two farms upgraded once can earn 300 food per 30 seconds. This is enough to sustain production from 6 corrals that can be worked by 3 citizen cavalry. This set up can provide 600 food every 30 seconds, for a total cost of: 1250 wood 800 food 100 metal 13 population +extra wood cost to support the population. In theory, this set up appears to be superior. I might test it out and see how it goes.