Iron Mine -> Iron (Unlocked at Castle 10) Different wild resource tiles generate RSS as well as materials needed for forging equipment. The resource tiles correspond to the resources that you carry. You send out your troops to gather from World Map. We will first go through basic information about these resource gathering tiles, then move on to actual strategies and tips to improve your rss gathering efficiency.
This comprehensive gathering guide will hopefully give you some better strategies and tips to gather more efficiently in the game. Clash of Kings is a resource intensive game, as you upgrade your buildings toward 30, you will find that you will always be lacking resources necessary to continue build, research, and grow your castle.