For the Home Village building with the same name, see Gold Mine/Home Village.
Gold Mine9.png

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


Gold Mine Ruin.png Gold Mine1.png Gold Mine2.png Gold Mine3.png Gold Mine4.png
Ruin Level 1 Level 2 Level 3 Level 4
Gold Mine5.png Gold Mine6.png Gold Mine7.png Gold Mine8.png Gold Mine9.png
Level 5 Level 6 Level 7 Level 8 Level 9

  • 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 Gold Mine in the Home Village, the Builder Gold produced by the Gold Mine in the Builder Base isn't at risk even if it is destroyed.
    • 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.

  • Upgrade Differences
  • The Gold Mine undergo significant visual changes at level 1, 2, 5, 7, and 8.
    • 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.

  • Trivia
    • It takes a total of 2 days, 4 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
    Icon Info.pngTapping this icon displays information about the Gold Mine, such as Level, Capacity, Production and Hitpoints.
    Icon Upgrade.pngTapping 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.
    Icon HoB.pngTapping 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, this icon is not shown.
    Icon FinishNow.pngTapping 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.
    Icon FinishNowBoB.pngTapping 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.
    Icon FinishNowBoE.pngTapping 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.
    Icon Cancel.pngTapping this icon, which is displayed only while an upgrade is in progress, cancels the current upgrade and refunds half of the upgrade cost.
Builder Hall Level 1 2 3 4 5 6 7 8 9
Number Available 1 1 1 1 2 2 2 3 3
Size Size
3x3
Level
Level
Capacity
Builder Gold
Production Per Hour
Builder Gold
Hitpoints
Hitpoints
Time to Fill
Time
Build Cost
Builder Elixir
Build Time
Time
Experience Gained
Experience
Catch-Up Point* Builder Hall Level Required
Builder Hall
1 24,000 1,000 300 1d 1,000 10m 24 N/A 1
2 28,800 1,200 345 1d 5,000 20m 34 1h 40m 3
3 36,000 1,500 397 1d 10,000 40m 48 2h 40m 3
4 43,200 1,800 457 1d 30,000 2h 84 10h 4
5 50,400 2,100 526 1d 60,000 5h 134 1d 6h 5
6 60,000 2,500 605 1d 100,000 8h 169 1d 18h 6
7 72,000 3,000 696 1d 200,000 10h 189 2d 2h 7
8 84,000 3,500 800 1d 300,000 12h 207 3d 8
9 96,000 4,000 840 1d 400,000 14h 224 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.

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