Base Building Reference

HQ Requirements -- What You Need to Upgrade

HQ	Prereq 1	Prereq 2+	Hero Cap
1	—	—	4
2	DG 1	Park 1	9
3	Wall 2	—	14
4	DG 3	Barr 3	19
5	Wall 4	Barr 4	24
6	Wall 5	DG 5	29
7	Wall 6	(A/T/M)C 6	34
8	TC 7	ALC 7	39
9	TC 8	(A/T/M)C 8	44
10	TC 9	Hosp 9	49
11	TC 10	Wall 10	54
12	TC 11	Barr 11	59
13	TC 12	(A/T/M)C 12	64
14	TC 13	DG 13	69
15	TC 14	Wall 14	74
16	TC 15	ALC 15	79
17	TC 16	(A/T/M)C 16	84
18	TC 17	Hosp 17	89
19	TC 18	Wall 18	94
20	TC 19	Barr 19	99
21	TC 20	(A/T/M)C 20	104
22	TC 21	DG 21	109
23	TC 22	Wall 22	114
24	TC 23	ALC 23	119
25	TC 24	(A/T/M)C 24	124
26	TC 25	Hosp 25	129
27	TC 26	Wall 26	134
28	TC 27	Barr 27	139
29	TC 28	(A/T/M)C 28	144
30	TC 29	DG 29	149
31	TC 30	Barr 30, (A/T/M)C 30	154
32	TC 31	Barr 31, (A/T/M)C 31, Wall 31	159
33	TC 32	Barr 32, (A/T/M)C 32, Hosp 32, DG 32	164
34	TC 33	Barr 33, (A/T/M)C 33, ALC 33, Wall 33	169
35	TC 34	Barr 34, (A/T/M)C 34, Hosp 34, DG 34	174

Legend

TC = Tech Center ALC = Alliance Center (A/T/M)C = Aircraft, Tank, or Missile Center Hosp = Hospital Barr = Barracks DG = Drill Ground

Requirement Patterns

TC required at EVERY level from HQ 8+
2nd prereq rotates (8-level cycle): ALC - (A/T/M)C - Hosp - Wall - Barr - (A/T/M)C - DG - Wall
(A/T/M)C = any 1 of the 3 military centers qualifies
HQ 31+ needs 3-5 buildings simultaneously
Hero Cap = HQ x 5 - 1

Troop Tier Unlocks (Barracks Level)

Lv 14 = T5 | Lv 17 = T6 | Lv 20 = T7 | Lv 24 = T8 | Lv 27 = T9 | Lv 30 = T10

HQ Upgrade Costs & Build Times

HQ	Food	Iron	Gold	Time
1	—	—	—	3s
2	68	68	—	4s
3	1K	1K	—	47s
4	2K	2K	—	1m 57s
5	20K	20K	—	11m 42s
6	91K	91K	—	35m 6s
7	240K	240K	—	1h 33m
8	390K	390K	—	3h 7m
9	620K	620K	200K	4h 22m
10	750K	750K	240K	5h 40m
11	2M	2M	600K	7h 22m
12	3M	3M	1M	9h 35m
13	4M	4M	1M	12h 28m
14	5M	5M	2M	16h 13m
15	7M	7M	2M	22h 42m
16	12M	12M	4M	1d 7h
17	16M	16M	5M	1d 20h
18	28M	28M	9M	2d 14h
19	33M	33M	11M	3d 15h
20	60M	60M	19M	5d 2h
21	84M	84M	27M	6d 14h
22	110M	110M	35M	8d 14h
23	140M	140M	44M	11d 4h
24	170M	170M	54M	15d 15h
25	290M	290M	93M	21d 21h
26	400M	400M	130M	30d 16h
27	530M	530M	170M	42d 22h
28	740M	740M	240M	60d 2h
29	1.0B	1.0B	330M	78d 3h
30	1.4B	1.4B	460M	101d 14h
31	1.6B	1.6B	510M	111d 18h
32	1.7B	1.7B	560M	122d 22h
33	1.9B	1.9B	620M	135d 5h
34	2.0B	2.0B	650M	141d 23h
35	2.1B	2.1B	680M	149d 2h

Military Centers (Tank / Aircraft / Missile)

All 3 have identical costs and build times. Only need 1 for HQ prereq.

Lv	Food	Iron	Gold	Time	Tier
14	1M	4M	780K	12h 9m	T5
17	4M	12M	2M	1d 9h	T6
20	15M	45M	10M	3d 19h	T7
24	43M	130M	27M	11d 17h	T8
27	130M	390M	84M	32d 5h	T9
30	360M	1.1B	230M	76d 5h	T10

Cost Comparison (Same Level)

Cheapest: Drill Ground, Alliance Center (food-heavy, low iron)
Moderate: Hospital, Barracks, Tech Center
Most Expensive: HQ, Wall (iron-heavy), Military Centers (iron-heavy)
Tip: Wall & Military Ctrs cost iron:food at 3:1 ratio. HQ costs equal food & iron.

Key Building Reference

Hospital Required HQ 10, 18, 26, 33, 35

Stores wounded troops. Higher level = more beds. Upgrade before Enemy Buster!

Lv	Food	Iron	Gold	Time
1	90	30	—	6s
2	230	75	—	12s
3	1K	340	—	47s
4	2K	840	—	1m 57s
5	20K	7K	—	11m 42s
6	91K	30K	—	35m 6s
7	180K	61K	—	1h 10m
8	290K	97K	—	2h 20m
9	470K	160K	120K	3h 16m
10	560K	190K	150K	4h 15m
11	1M	470K	370K	5h 32m
12	2M	790K	630K	7h 11m
13	3M	870K	700K	9h 21m
14	4M	1M	980K	12h 9m
15	5M	2M	1M	17h 1m
16	9M	3M	2M	23h 50m
17	12M	4M	3M	1d 9h
18	21M	7M	6M	1d 22h
19	25M	8M	7M	2d 17h
20	45M	15M	12M	3d 19h
21	63M	21M	17M	4d 23h
22	82M	27M	22M	6d 10h
23	100M	34M	27M	8d 9h
24	130M	43M	34M	11d 17h
25	220M	72M	58M	16d 10h
26	300M	100M	81M	23d 1h
27	390M	130M	110M	32d 5h
28	550M	180M	150M	45d 2h
29	770M	260M	210M	58d 14h
30	1.1B	360M	290M	76d 5h
31	1.2B	400M	320M	83d 19h
32	1.3B	440M	350M	92d 4h
33	1.4B	480M	380M	101d 10h
34	1.5B	500M	400M	106d 11h
35	1.6B	530M	420M	111d 19h

Wall Required HQ 3,5,6,7,11,15,19,23,27,32,34

Defensive durability. IRON-heavy (opposite of most buildings). Required most often!

Lv	Food	Iron	Gold	Time
1	—	—	—	—
2	23	68	—	4s
3	340	1K	—	47s
4	840	2K	—	1m 57s
5	7K	20K	—	11m 42s
6	30K	91K	—	35m 6s
7	81K	240K	—	1h 33m
8	130K	390K	—	3h 7m
9	210K	620K	130K	4h 22m
10	250K	750K	160K	5h 40m
11	620K	2M	400K	7h 22m
12	1M	3M	680K	9h 35m
13	1M	4M	740K	12h 28m
14	2M	5M	1M	16h 13m
15	2M	7M	2M	22h 42m
16	4M	12M	3M	1d 7h
17	5M	16M	3M	1d 20h
18	9M	28M	6M	2d 14h
19	11M	33M	7M	3d 15h
20	20M	60M	13M	5d 2h
21	28M	84M	18M	6d 14h
22	36M	110M	23M	8d 14h
23	45M	140M	29M	11d 4h
24	57M	170M	36M	15d 15h
25	96M	290M	62M	21d 21h
26	130M	400M	86M	30d 16h
27	180M	530M	110M	42d 22h
28	250M	740M	160M	60d 2h
29	340M	1.0B	220M	78d 3h
30	480M	1.4B	310M	101d 14h
31	530M	1.6B	340M	111d 18h
32	580M	1.7B	370M	122d 22h
33	640M	1.9B	410M	135d 5h
34	673M	2.0B	430M	141d 23h
35	710M	2.1B	450M	149d 2h

Alliance Center Required HQ 8, 16, 24, 34

Help slots, rally capacity, shop access. Lv23 = 16 base helps (+6 Lawyers = 22)

Lv	Food	Iron	Gold	Time
1	90	30	—	6s
2	230	75	—	12s
3	1K	340	—	47s
4	2K	840	—	1m 57s
5	20K	7K	—	11m 42s
6	61K	20K	—	23m 24s
7	120K	41K	—	46m 48s
8	190K	65K	—	1h 33m
9	310K	100K	100K	2h 11m
10	370K	120K	120K	2h 50m
11	930K	310K	300K	3h 41m
12	2M	530K	510K	4h 47m
13	2M	580K	560K	6h 14m
14	2M	810K	780K	8h 6m
15	3M	1M	1M	11h 21m
16	6M	2M	2M	15h 53m
17	8M	3M	2M	22h 15m
18	14M	5M	4M	1d 7h
19	17M	6M	5M	1d 19h
20	30M	10M	10M	2d 13h
21	42M	14M	13M	3d 7h
22	54M	18M	17M	4d 7h
23	68M	23M	22M	5d 14h
24	85M	28M	27M	7d 16h
25	140M	48M	46M	10d 19h
26	200M	67M	65M	15d 8h
27	260M	88M	84M	21d 12h
28	370M	120M	120M	30d 1h
29	520M	170M	170M	39d 1h
30	720M	240M	230M	50d 19h
31	790M	260M	250M	55d 21h
32	870M	290M	280M	61d 11h
33	960M	320M	310M	67d 14h
34	1.0B	340M	320M	70d 23h
35	1.1B	350M	340M	74d 13h