The Castle gate reinforcement is a defensive tool players can equip on their castle gate that increase the gate protection by by 35%. They are the most basic gate defense tools. They can be earned through certain Mercenary Missions and can also be made in the Defense workshop at Level 1, and can also be bought at the Armorer for 1720 Coins each. They cost 120 Stone and 280 Wood to create. The building time will vary depending on workshop levels and Public order.