Great Library

A Library has to be built before a Great Library.

The Great Library increases the maximum knowledge by +3 of all Libraries within its radius of 12 squares. This does not stack with itself nor degrade due to range within the 12 squares.

The Great Library adds + in a radius of 4 squares, + for the 5th square, + for the 6th and 7th square, + for the 8th square, + for the 9th square, + for the 10th and 11th square, and + for the 12th square.

Research
The Great Library can be used to buy Research, which will improve the productivity of your kingdom. The Great Library must have employed Librarians in order to perform the Research. The effects of the Research are permanent, even if the Great Library is deconstructed or destroyed. This Research applies to all islands.