The agreement books, better known as books, are a kind of document that is treated as material, necessary to prosper the castle. It is somewhat similar to the stamina arrow, used to upgrade the watchtower. If you don't know, we are going to show you here how many agreement books there are in Rise of Kingdoms. These books can be obtained by destroying Wild Forts on the map, in the store, but you can also acquire them using one gem each of them, at the moment that you lack a certain number to prosper the castle.
You can also achieve more books according to Rise of Kingdoms by joining and supporting the congregations your coalition organizes. This, combined with the gems that wildlings drop, results in a fairly quick procedure for progressing the castle. The truth is that the only procedure to achieve them quickly is by buying. It's pretty rare to get deal books in Rise of Kingdoms, so you should save gems until such time as you're sure you can prosper the castle as much as you can.
How many Books of Agreement are there in Rise of Kingdoms?
The total number of books of agreement you need to prosper the castle to the limit is no more and no less than five thousand books of agreement, apart from other requirements in level of other fortifications. If you think there are many, keep in mind that this is only to raise the castle to the limit, without estimating the lower levels. You will probably have to spend considerably more to reach this level.
The basic idea is that there is no way to get a thousand books of agreement, unless you want to spend eighty centuries looking for them. The moment they start requesting more books from you than you can get in a week, you'll have to manage to get them through gems.
And the simplest way to get gems is by defeating wildlings, which drop a few each and every siege, and they can be quite useful.