The Fortress Gates have an extra large garrison and only one building slot. While besieging Fortress Gates, the attackers don't have the option to construct Siege weapons, effectively resulting in the siege being more in the defenders' favor.
Settlement building chain for Fortress Gates
- I Small Fortress Gate
- II Fortress Gate
- III Imposing Fortress Gate
- IV Grand Fortress Gate
- V Impregnable Fortress Gate
They are meant as extreme defensible positions. Recommend setting their commandment to be growth related, in order to build up their building chain, and thus their garrison, faster. Use them as hard lines of defence against invading enemies.
- Fortresses were added to the Empire in The Empire Undivided Update.