Sanctum

The Sanctum.

Sanctum panel.

Old look of the Sanctum.

The Sanctum unlocks at Player Level 20 and is the last building unlocked. It is also the most expensive, costing more than the Keep.

Upgrading the Sanctum provides +2% Health per level (maximum 20 levels).

Ascension and the Essence Refinery unlocks at Sanctum Level 12.

Cost To Upgrade

Level	Cost
1	63
2	500
3	1,688
4	4,000
5	7,813
6	13,500
7	21,438
8	32,000
9	45,563
10	62,500
11	83,188
12	108,000
13	137,313
14	171,500
15	210,938
16	256,000
17	307,063
18	364,500
19	428,688
20	500,000
	Total
	2,756,250