Battle Hall

The Battle Hall lets you start or join rallies. The rally leader's Battle Hall level determines the maximum number of Soldiers in the Rally. Every troop involved in the Rally uses the stats of the rally leader, and not the stats of the player who owns the troops, so it's important to let your strongest member lead the rally.

War Tomes can be obtained in chests from monsters, as a possible guild fest reward, or gift packs bought. They can also be purchased in the gem shop. It is recommended that you only buy the 1,000 stacks until your Battle Hall is level 24, at which point you can buy the lower ones for the remainder.

Total number of required War Tomes: 20,000.

War Tome Costs: 1 for 15 gems, 10 for 120 gems, 100 for 1,100 gems and 1,000 for 10,000 gems.

Tip: you need this building maxed for academy level 25 same with the altar and prison so spend gems on these buildings as much as possible so you can unlock t4 faster

Upgrade Results

Level	Might Bonus	Max Coalition Army Size	Required	Original Build Time
1	30	20,000	Embassy: Lv.1	00:02:00
2	60	40,000	Embassy: Lv.2	00:04:00
3	90	80,000	Embassy: Lv.3	00:08:00
4	126	120,000	Embassy : Lv.4	00:16:00
5	176	160,000	Embassy : Lv.5	00:32:00
6	247	180,000	Embassy : Lv.6	01:04:00
7	346	200,000	Embassy : Lv.7	02:08:00
8	484	220,000	Embassy : Lv.8	04:16:00
9	677	240,000	Embassy : Lv.9	07:40:48
10	949	260,000	Embassy : Lv.10	12:17:17
11	1,328	280,000	Embassy : Lv.11	15:58:28
12	1,860	300,000	Embassy : Lv.12	18:22:15
13	2,603	350,000	Embassy : Lv.13	21:07:35
14	3,645	400,000	Embassy : Lv.14	1d 00:17:43
15	5,102	450,000	Embassy : Lv.15	1d 03:56:22
16	7,144	500,000	Embassy : Lv.16	1d 08:07:49
17	10,000	550,000	Embassy : Lv.17	1d 12:57:00
18	14,001	600,000	Embassy : Lv.18	1d 18:29:32
19	19,602	700,000	Embassy : Lv.19	2d 00:51:58
20	27,442	800,000	Embassy : Lv.20	2d 08:11:46
21	38,419	900,000	Embassy : Lv.21	3d 01:03:18
22	53,787	1,000,000	Embassy : Lv.22	4d 20:53:16
23	75,302	1,250,000	Embassy : Lv.23	8d 18:23:52
24	105,422	1,500,000	Embassy : Lv.24	15d 18:42:58
25	179,217	2,000,000	Embassy : Lv.25 Gold Hammer: 1	55d 05:30:20

At level 25 the Battle Hall increases Coalition Army ATK by 10%.

Resource Requirements

The "invested gems" column assumes you only pay 10 gems per tome. To calculate how many gems you would need to spend to level the Battle Hall from a certain level to another simply substract each individual gem investment.

Level	Food	Stone	Timber	Ore	War Tomes	Total invested gems
1	140	140	140	140	1	10
2	210	210	210	210	2	30
3	315	315	315	315	5	80
4	472	472	472	472	12	200
5	708	708	708	708	20	400
6	1,063	1,063	1,063	1,063	30	700
7	1,594	1,594	1,594	1,594	45	1,150
8	2,392	2,392	2,392	2,392	60	1,750
9	3,588	3,588	3,588	3,588	85	2,600
10	5,382	5,382	5,382	5,382	100	3,600
11	8,073	8,073	8,073	8,073	120	4,800
12	12,109	12,109	12,109	12,109	150	6,300
13	18,164	18,164	18,164	18,164	180	8,100
14	27,246	27,246	27,246	27,246	250	10,600
15	40,870	40,870	40,870	40,870	340	14,000
16	61,305	61,305	61,305	61,305	500	19,000
17	91,957	91,957	91,957	91,957	700	26,000
18	137,936	137,936	137,936	137,936	900	35,000
19	206,904	206,904	206,904	206,904	1200	47,000
20	310,357	310,357	310,357	310,357	1500	62,000
21	465,535	465,535	465,535	465,535	1800	80,000
22	698,303	698,303	698,303	698,303	2100	101,000
23	1,047,455	1,047,455	1,047,455	1,047,455	2400	125,000
24	1,571,183	1,571,183	1,571,183	1,571,183	3000	155,000
25	3,142,367	3,142,367	3,142,367	3,142,367	4500	200,000