This thread is primarily a study I have been doing here and there to understand how Firaxis created unit values to their costs. This is not necessarily the same thing as Oz' thread on what the AI makes, but they both may be helpful to each other. The reason for this is primarily: The game obviously is hardcoded to some extent on what the AI builds. Sometimes it is difficult to get the AI to build certain units; which ultimately has to do with a units' values, costs, and special abilities. The game designers most likely IMO coded the game around the values and cost system they setup for their units. For the most part, the AI seems to make units pretty well in the normal game. Although different unit values can work great, this is here to help see the 'patterns' that Firaxis had in mind, so we can use to to help emulate cost and strength balance in the game if we so desire!