The Fortified Wall upgrade is a university technology researched at the University. Upgrades Stone Walls and Stone Gates to Fortified Walls and Gates, which are stronger.
Plan Fortified Wall in the Upgrade Codex →
Effect Upgrades Stone Walls and Stone Gates to Fortified Walls and Gates, which are stronger.
Cost
⏱ 50s Where to research Researched at the University.
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200 food
100 wood⏱ 50s