Houses
Houses

Everybody's gotta have a roof over his head. That's what these things are for.

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Houses are one of those necessary annoyances. They serve no actual purpose, yet you must have them around. Houses support any units you build/concieve. One house can support four units, so you need one house for every soldier, villager or boat that you create. Houses are inconsequential in conquering, but you need to destroy them to defeat a civilization.