Crystal mine

Introduction

The Crystal mine allows you to mine .

is donated by members who have towns on the island to help upgrade the mine. The higher the level, the more Citizens can be allocated as workers to mine crystal.

Wealth is needed before you can mine .

Helping Hands allows you to increase the number of workers by 50% for an added 12.5% output.

• The Optician decreases cost by 1% per level in the town it is built.
• The Glassblower increases production in the mine by 2% per level in the town it is built.

Expansion details

Below are the costs to upgrade each level of the luxury resource on the Crystal island.

Note: The time it takes to upgrade to the next level is determined by the following formula:

${ Build ~time ~in ~seconds = ( \frac { 14400 } { 1 } \times 1.1 ^ { Level } - 14400 ) }$
${ ~rounded ~to ~the ~nearest ~whole ~second }$

Due to the large number of templates and mouse-over tool-tips used to display the information on this building, we are breaking this building's expansion levels down into groups of 3, instead of the normal grouping of 10.