Goldmine

“It is impossible for us to know the exact date that humans first began to mine gold, but those sparkling artifacts have been the symbol of nobility for thousands of years. From the oldest known goldmine in what is now the nation of Georgia to modern mining machines, the charm of gold never dies. ”
Unlocked at: City Hall Lv.10 — Additional building unlocks at: Lv.12, Lv.14, Lv.16

The Goldmine produces gold for collection by the governor. It is one of four such resource production buildings, along with the Farm (food), Lumber Mill (wood), and Quarry (stone). Each upgrade of the goldmine improves its gold production per hour and its max gold capacity.

Building Requirements

Please note The build times listed below assume no building bonuses are active, such as those from technologies, alliance technologies, or VIP perks. While we cannot predict your build time, it will likely be less.

Level	Gold/Hr	Capacity	Requirements	Cost	Time	Power	ROI days
1	200	2,000	City Hall Lv. 10	500 500	10s	6	0.1
2	215	2,150	City Hall Lv. 10	1.0K 1.0K	4m	19	2.8
3	235	2,350	City Hall Lv. 10	2.0K 2.0K	8m	46	4.2
4	260	2,600	City Hall Lv. 10	3.8K 3.8K 2.5K	13m 20s	100	9.1
5	290	2,900	City Hall Lv. 10	6.8K 6.8K 5.0K	32m	219	14.1
6	325	3,250	City Hall Lv. 10	11.5K 11.5K 12.0K	41m 40s	401	23.2
7	365	3,650	City Hall Lv. 10	17.3K 17.3K 19.2K	1h 12m	699	31.4
8	415	4,150	City Hall Lv. 10	26.0K 26.0K 30.8K	1h 40m	1,335	38.8
9	475	4,750	City Hall Lv. 10	39.0K 39.0K 49.2K	2h 13m	1,758	50
10	550	5,500	City Hall Lv. 10	58.5K 58.5K 78.7K	3h 3m	2,668	61.6
11	650	6,500	City Hall Lv. 11	90.0K 90.0K 120.0K	4h 8m	3,984	70.8
12	775	7,750	City Hall Lv. 12	135.0K 135.0K 180.0K	6h 13m	5,958	85.0
13	925	9,250	City Hall Lv. 13	202.5K 202.5K 270.0K	7h 38m	8,678	106
14	1,100	11,000	City Hall Lv. 14	305.0K 305.0K 405.0K	9h 19m	12,454	137
15	1,350	13,500	City Hall Lv. 15	457.5K 457.5K 607.5K	11h 7m	17,707	144
16	1,600	16,000	City Hall Lv. 16	687.5K 687.5K 912.5K	13h 25m	25,126	216
17	1,850	18,500	City Hall Lv. 17	1.0M 1.0M 1.4M	19h 10m	36,126	322
18	2,150	21,500	City Hall Lv. 18	1.6M 1.6M 2.1M	1d	52,139	417
19	2,500	25,000	City Hall Lv. 19	2.3M 2.3M 3.1M	1d 7h	75,230	520
20	2,900	29,000	City Hall Lv. 20	3.5M 3.5M 4.7M	1d 14h	108,850	691
21	3,350	33,500	City Hall Lv. 21	5.3M 5.3M 7.1M	2d 2h	158,176	929
22	3,900	39,000	City Hall Lv. 22	7.9M 7.9M 10.6M	2d 13h	230,233	1134
23	4,500	45,000	City Hall Lv. 23	11.8M 11.8M 15.9M	3d 9h	336,750	1556
24	5,200	52,000	City Hall Lv. 24	17.8M 17.8M 24.0M	4d 11h	495,206	2012
25	10,400	104,000	City Hall Lv. 25	26.8M 26.8M 36.0M 1x Master's Blueprint	7d 2h	735,046	?

• ROI (Return On Investment) is how many days for the goldmine to produce the resources it took to upgrade. Production boost items can reduce the time. Currently it isn't worth upgrading all your goldmines much past level ~8 due to the cumulative 100+ day ROI time.

Side Quests

Rewards are given via quest completion for upgrading this building.

Money Machine — Upgrade the Goldmine ()

Requirement	Reward
Upgrade Goldmine to Level 1	???  ???  ???
Upgrade Goldmine to Level 2	1,250 750
Upgrade Goldmine to Level 3	1,750 2,500
Upgrade Goldmine to Level 4	2,500 3,250 2,000
Upgrade Goldmine to Level 5	12,250 11,250 9,000
Upgrade Goldmine to Level 6	8,500 8,750 9,250
Upgrade Goldmine to Level 7	???  ???  ???
Upgrade Goldmine to Level 8	???  ???  ???
Upgrade Goldmine to Level 9	???  ???  ???
Upgrade Goldmine to Level 10	???  ???  ???
Upgrade Goldmine to Level 11	???  ???  ???
Upgrade Goldmine to Level 12	???  ???  ???
Upgrade Goldmine to Level 13	???  ???  ???
Upgrade Goldmine to Level 14	???  ???  ???
Upgrade Goldmine to Level 15	???  ???  ???
Upgrade Goldmine to Level 16	???  ???  ???
Upgrade Goldmine to Level 17	???  ???  ???
Upgrade Goldmine to Level 18	154,000 155,500 210,000
Upgrade Goldmine to Level 19	231,000 233,000 316,000
Upgrade Goldmine to Level 20	347,500 350,750 475,250
Upgrade Goldmine to Level 21	521,250 526,250 713,000