Gold Mine/Builder Base

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For the Home Village building with the same name, see Gold Mine/Home Village.

"The Gold Mine produces gold. Upgrade it to boost its production and gold storage capacity."

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Ruin	Level 1	Level 2	Level 3	Level 4

Level 5	Level 6	Level 7	Level 8	Level 9

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• Summary
  • The Gold Mine is unlocked at Builder Hall level two.
  • The Gold Mine collects Builder Gold from an unlimited underground reserve and stores it until collected by the player and placed into a Gold Storage. When the mine is full, production will be stopped until it is collected.
  • The production rate and storage capacity depends on the level of the Gold Mine. One can estimate the amount of resources in the mine by looking at the cart at the right side of the mine.
  • The Gold Mine takes up a 3x3 space.
  • When you choose to upgrade a Gold Mine, it will automatically collect any uncollected Builder Gold. Note that if your Gold Storages are full at that time, the uncollected Builder Gold will be lost! During the upgrade, the mine stops producing Builder Gold.
  • Unlike the regular Gold Mine, the Builder Gold it produces isn't at risk even if you lose a Versus Battle.
  • At each level, the production per hour and its Builder Gold capacity are such that the Gold Mine always fills in 24 hours. This is much unlike the Home Village version, where lower leveled Gold Mines fill within a few hours but higher leveled Gold Mines take a few days to completely fill.

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• Upgrade Differences
  • At level 1, the Gold Mine consists of a somewhat dilapidated wooden structure partially covering a set of narrow rails diving deep within the earth. Periodically a rail cart full of gold arrives and dumps its contents into a small repository to the side of the mine, and then re-enters the mine.
  • At level 2, the Gold Mine appears to be fully repaired, and two wooden reinforcing bars appear on the outside of the wooden structure. There is also a very small stone rubble pile on the edge of the structure.
  • At level 3, a third wooden reinforcing bar is added, and the rubble pile outside the structure grows to a noticeable size.
  • At level 4, a fourth wooden reinforcing bar is added, and the rubble pile outside the structure grows larger as well.
  • At level 5, the first major graphical change takes place. The wooden reinforcing bars are replaced with a blue-gray steel bar, and the rubble pile outside the mine is replaced by a stone support.
  • At level 6, a thin brown thread is added to the back of the mine.
  • At level 7, the steel reinforcing bar appears to be larger in width. Another wooden bar is also added to the back.
  • At level 8, the Gold Mine now has two wide steel reinforcing bars bolted down, and a small pulley system, complete with a wooden track for the cable, appears on the top surface of the mine.
  • At level 9, additional pulley hardware is added to the top of the structure, and the pulley wheel itself grows larger.

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• Trivia
  • It takes a total of 1 day, 2 hours and 10 minutes to fully upgrade the Gold Mine.
  • At each level, the Builder Base's Gold Mine and Elixir Collector's upgrade cost and time are equal.
  • The Gold mine is one of the buildings that you are automatically set with at the beginning of the tutorial to the Builder Base.
  • The gold produced by the Gold Mine, Builder Gold, is shaped like a square with round edges.
  • Although directly selecting a Gold Mine with a Gold bubble above it automatically collects any resources it has stored, there is a way to check how much Builder Gold has been stored without collecting it. This can be done by moving any other building to an invalid spot on your map (e.g., off the edge of your map, or fully or partially occupied by an obstacle, decoration or another building) and releasing it while its surrounding square has turned red. Then select the desired Gold Mine and choose the "Info" option to display the amount of Builder Gold gathered by the mine to that point.

Icon Descriptions

	Tapping this icon displays information about the Gold Mine, such as Level, Capacity, Production and Hitpoints.
	Tapping this icon begins upgrading the Gold Mine to the next level, if you have enough resources and a free Master Builder or O.T.T.O. When the Gold Mine is at maximum level, this icon is not shown.
	Tapping this icon instantly upgrades the Gold Mine to the next level, at the cost of one Hammer of Building if you have one. When the Gold Mine is at maximum level, or the Builder Hall requirements for the next level are not met, this icon is not shown.
	Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of the displayed number of Gems.
	Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of one Book of Building. This icon is only shown if you have at least one Book of Building.
	Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of one Book of Everything. This icon is only shown if you have at least one Book of Everything but do not have a Book of Building.
	Tapping this icon, which is displayed only while an upgrade is in progress, cancels the current upgrade and refunds half of the upgrade cost.

Number Available	Builder Hall Level
	1	2	3	4	5	6	7	8	9	10
Total	1	1	1	1	2	2	2	3	3	3

Size
3x3

Level	Build Cost	Build Time	Experience Gained	Capacity	Production Per Hour	Hitpoints	Time to Fill	Catch-Up Point*	Builder Hall Level Required
1	1,000	10m	24	24,000	1,000	300	1d	N/A	1
2	5,000	20m	34	28,800	1,200	345	1d	1h 40m	3
3	10,000	40m	48	36,000	1,500	397	1d	2h 40m	3
4	30,000	2h	84	43,200	1,800	457	1d	10h	4
5	60,000	5h	134	50,400	2,100	526	1d	1d 6h	5
6	100,000	8h	169	60,000	2,500	605	1d	1d 18h	6
7	200,000	10h	189	72,000	3,000	696	1d	2d 2h	7
8	300,000	12h	207	84,000	3,500	800	1d	3d	8
9	400,000	14h	224	96,000	4,000	840	1d	4d 2h	9

* The Catch-Up Point is the time at which the newly upgraded Gold Mine has equaled the total production of the mine had it not been upgraded - this does not consider recovering the cost of the Builder Elixir required to perform the upgrade.

Caveat: The Catch-Up Point calculation assumes that the player collects all resources from the Gold Mine without allowing it to reach its storage capacity, as resource production ceases at that point. If the player is unable to regularly collect and achieve the full potential of the collector, the Catch-Up Point is actually shorter and performing the upgrade becomes more advantageous.

For additional statistics and information, see the Unit Calculators page.