Crystal Volcano

Crystal Volcano
Note: This decoration is animated.

Introduction
The Crystal Volcano decoration was introduced on 17 January 2013. It was on sale until 22 January 2013.

Economic Analysis

 * Although the game advertises a maximum of [[File:Buildings icon premium.png]] 411 (= 120 days x 24 hours per day / 7 hours per crystal), it is practically not possible to harvest all these crystals, given sleep times
 * We consider a more likely outcome to be [[File:Buildings icon premium.png]] 360 over the life of the decoration
 * Therefore, based on our assumptions, the theoretical net profit, assuming 3 collections per day and a net investment of [[File:Buildings icon premium.png]] 179, is 101%
 * This is similar to that of the Crystal Waterfall which is 101% (return of [[File:Buildings icon premium.png]] 359 on a net cost of [[File:Buildings icon premium.png]] 179)

Challenges
Shortly after its introduction, the following challenges appeared.