Rupie Mine

Rupie Mine

Description

A facility for mining rupies from the earth. Shipments arrive in regular intervals, providing a great source of easy income!

Facility Type

Production

Size

3x3

Available

Obtained From

Release Date

July 25, 2026

Short Summary

The Rupie Mine collects Rupies at set intervals and stores them up to a limit.
Two Rupie Mine are immediately available, and a 3rd and 4th mine can be built at Player Lv. 22 and 34, respectively.

Upgrade Table

Level	Prod. Time	Limit	Cost	Materials Required	Build Time	Payback Period
1	6 hr	800	50	—	3 sec	6 Hours
2	6 hr	850	100	—	30 sec	12 Hours
3	6 hr	900	150	—	1 min	18 Hours
4	6 hr	950	200	—	3 min	24 Hours
5	6 hr	1,000	250	—	5 min	30 Hours
6	6 hr	1,050	300	x1	10 min	36 Hours
7	6 hr	1,100	350	x1	20 min	42 Hours
8	6 hr	1,150	400	x1	40 min	48 Hours
9	6 hr	1,200	500	x2	1 hr	60 Hours
10	6 hr	1,250	600	x2	2 hr	72 Hours
11	6 hr	1,300	700	x3	3 hr	84 Hours
12	6 hr	1,350	800	x3	4 hr	96 Hours
13	6 hr	1,400	900	x3	5 hr	108 Hours
14	6 hr	1,450	1,000	x5	6 hr	120 Hours
15	6 hr	1,500	1,100	x5	7 hr	133 Hours
16	6 hr	1,550	1,200	x8, x1	8 hr	146 Hours
17	6 hr	1,600	1,400	x8, x1	10 hr	172 Hours
18	6 hr	1,650	1,600	x8, x1	12 hr	198 Hours
19	6 hr	1,700	1,800	x10, x1	14 hr	224 Hours
20	6 hr	1,750	2,000	x10, x1	16 hr	250 Hours
21	6 hr	1,800	2,200	x15, x2	18 hr	276 Hours
22	6 hr	1,850	2,400	x15, x2	20 hr	302 Hours
23	6 hr	1,900	2,600	x15, x2	22 hr	328 Hours
24	6 hr	1,950	2,800	x20, x2	24 hr	354 Hours
25	6 hr	2,000	3,000	x20, x2	28 hr	382 Hours
26	6 hr	2,050	3,200	x30, x3, x1	32 hr	410 Hours
27	6 hr	2,100	3,400	x30, x3, x1	36 hr	438 Hours
28	6 hr	2,150	3,600	x30, x3, x1	40 hr	466 Hours
29	6 hr	2,200	3,800	x40, x3, x1	44 hr	494 Hours
30	6 hr	2,250	4,000	x40, x3, x1	48 hr	522 Hours
Total			46,400	x325, x30, x5	16.7 days

Payback Period

The time it takes for each individual level of the Rupie Mine to break even, or pay itself off compared to the amount you would be making on the previous level.

Since the increase for each level is always 50, all levels will use 50 as the profit. The payback period of 1 level has no effect on the payback period of another level, they are all independent, and can occur simultaneously.

PaybackPeriod = Cost/(50/6 hrs) + max(BuildTime-6 hrs,0)

The first term in the formula calculates the time it takes to cover the cost of the upgrade at that level's bonus income rate. The second term accounts for the time period where potential Rupies are lost because they cannot be collected during construction. Since this only happens when the build time exceeds 6 hours, the second term rejects negative numbers and only keeps zero/positive numbers.