Development

29 research items: cost, time and requirements per level.

29 research items in tree order. Per level: power, cost, base research time (without speed bonuses) and requirement; the total of all levels below.

Fast Builder I

Level	Power	Food	Iron	Coin	Time	Requirements
1	100	500	500	1,500	5 min	Tech Center Lv. 1
2	200	800	800	2,300	6 min	Tech Center Lv. 2
3	300	1,100	1,100	3,400	8 min	Tech Center Lv. 3
4	500	1,700	1,700	5,100	10 min	Tech Center Lv. 4
5	700	2,500	2,500	7,600	13 min	Tech Center Lv. 5
Total		6,600	6,600	19,900	42 min

Hospital Expansion I

Level	Power	Food	Iron	Coin	Time	Requirements
1	100	1,100	1,100	3,400	8 min	Tech Center Lv. 3, Fast Builder I Lv. 1
2	300	1,700	1,700	5,100	10 min	Tech Center Lv. 4
3	500	2,500	2,500	7,600	13 min	Tech Center Lv. 5
4	700	5,100	5,100	15,200	16 min	Tech Center Lv. 6
5	1,100	15,200	15,200	45,600	21 min	Tech Center Lv. 7
Total		25,600	25,600	76,900	1 h 8 min

Barracks Expansion I

Level	Power	Food	Iron	Coin	Time	Requirements
1	100	1,100	1,100	3,400	8 min	Tech Center Lv. 3, Fast Builder I Lv. 1
2	300	1,700	1,700	5,100	10 min	Tech Center Lv. 4
3	500	2,500	2,500	7,600	13 min	Tech Center Lv. 5
4	700	5,100	5,100	15,200	16 min	Tech Center Lv. 6
5	1,100	15,200	15,200	45,600	21 min	Tech Center Lv. 7
Total		25,600	25,600	76,900	1 h 8 min

Research Enhancement I

Level	Power	Food	Iron	Coin	Time	Requirements
1	200	2,500	2,500	7,600	13 min	Tech Center Lv. 5, Hospital Expansion I Lv. 3, Barracks Expansion I Lv. 3
2	400	5,100	5,100	15,200	16 min	Tech Center Lv. 6
3	800	15,200	15,200	45,600	21 min	Tech Center Lv. 7
4	1,300	30,400	30,400	91,100	27 min	Tech Center Lv. 8
5	1,900	48,600	48,600	145,800	35 min	Tech Center Lv. 9
Total		101,800	101,800	305,300	1 h 52 min

Rapid Field Dressing I

Level	Power	Food	Iron	Coin	Time	Requirements
1	200	2,500	2,500	7,600	13 min	Tech Center Lv. 5, Research Enhancement I Lv. 1
2	400	5,100	5,100	15,200	16 min	Tech Center Lv. 6
3	800	15,200	15,200	45,600	21 min	Tech Center Lv. 7
4	1,300	30,400	30,400	91,100	27 min	Tech Center Lv. 8
5	1,900	48,600	48,600	145,800	35 min	Tech Center Lv. 9
Total		101,800	101,800	305,300	1 h 52 min

Focused Training I

Level	Power	Food	Iron	Coin	Time	Requirements
1	200	2,500	2,500	7,600	13 min	Tech Center Lv. 5, Research Enhancement I Lv. 1
2	400	5,100	5,100	15,200	16 min	Tech Center Lv. 6
3	800	15,200	15,200	45,600	21 min	Tech Center Lv. 7
4	1,300	30,400	30,400	91,100	27 min	Tech Center Lv. 8
5	1,900	48,600	48,600	145,800	35 min	Tech Center Lv. 9
Total		101,800	101,800	305,300	1 h 52 min

Master Craftsman

Level	Power	Food	Iron	Coin	Time	Requirements
1	200	5,100	5,100	15,200	16 min	Tech Center Lv. 6, Rapid Field Dressing I Lv. 2, Focused Training I Lv. 2
2	700	30,400	30,400	91,100	27 min	Tech Center Lv. 8
3	1,500	77,800	77,800	233,300	46 min	Tech Center Lv. 10
4	2,800	233,300	233,300	699,800	1 h 42 min	Tech Center Lv. 12
5	4,600	436,200	436,200	1,308,700	4 h 50 min	Tech Center Lv. 14
Total		782,800	782,800	2,348,100	8 h 1 min

Fast Builder II

Level	Power	Food	Iron	Coin	Time	Requirements
1	500	30,400	30,400	91,100	27 min	Tech Center Lv. 8, Master Craftsman Lv. 2
2	1,100	48,600	48,600	145,800	35 min	Tech Center Lv. 9
3	1,900	77,800	77,800	233,300	46 min	Tech Center Lv. 10
4	2,800	93,300	93,300	279,900	1 h 8 min	Tech Center Lv. 11
5	4,100	233,300	233,300	699,800	1 h 42 min	Tech Center Lv. 12
Total		483,400	483,400	1,449,900	4 h 38 min

Hospital Expansion II

Level	Power	Food	Iron	Coin	Time	Requirements
1	800	77,800	77,800	233,300	46 min	Tech Center Lv. 10, Fast Builder II Lv. 3
2	1,700	93,300	93,300	279,900	1 h 8 min	Tech Center Lv. 11
3	3,000	233,300	233,300	699,800	1 h 42 min	Tech Center Lv. 12
4	4,700	396,600	396,600	1,189,700	2 h 33 min	Tech Center Lv. 13
5	6,500	436,200	436,200	1,308,700	4 h 50 min	Tech Center Lv. 14
Total		1,237,200	1,237,200	3,711,400	10 h 59 min

Barracks Expansion II

Level	Power	Food	Iron	Coin	Time	Requirements
1	800	77,800	77,800	233,300	46 min	Tech Center Lv. 10, Fast Builder II Lv. 3
2	1,700	93,300	93,300	279,900	1 h 8 min	Tech Center Lv. 11
3	3,000	233,300	233,300	699,800	1 h 42 min	Tech Center Lv. 12
4	4,700	396,600	396,600	1,189,700	2 h 33 min	Tech Center Lv. 13
5	6,500	436,200	436,200	1,308,700	4 h 50 min	Tech Center Lv. 14
Total		1,237,200	1,237,200	3,711,400	10 h 59 min

Research Enhancement II

Level	Power	Food	Iron	Coin	Time	Requirements
1	900	93,300	93,300	279,900	1 h 8 min	Tech Center Lv. 11, Hospital Expansion II Lv. 2, Barracks Expansion II Lv. 2
2	2,200	233,300	233,300	699,800	1 h 42 min	Tech Center Lv. 12
3	3,900	396,600	396,600	1,189,700	2 h 33 min	Tech Center Lv. 13
4	5,700	436,200	436,200	1,308,700	4 h 50 min	Tech Center Lv. 14
5	7,800	610,700	610,700	1,832,200	9 h 40 min	Tech Center Lv. 15
Total		1,770,100	1,770,100	5,310,300	19 h 53 min

Rapid Field Dressing II

Level	Power	Food	Iron	Coin	Time	Requirements
1	1,300	233,300	233,300	699,800	1 h 42 min	Tech Center Lv. 12, Research Enhancement II Lv. 2
2	3,000	396,600	396,600	1,189,700	2 h 33 min	Tech Center Lv. 13
3	4,800	436,200	436,200	1,308,700	4 h 50 min	Tech Center Lv. 14
4	6,900	610,700	610,700	1,832,200	9 h 40 min	Tech Center Lv. 15
5	9,400	855,000	855,000	2,565,100	18 h 21 min	Tech Center Lv. 16
Total		2,531,800	2,531,800	7,595,500	1 d 13 h 6 min

Focused Training II

Level	Power	Food	Iron	Coin	Time	Requirements
1	1,300	233,300	233,300	699,800	1 h 42 min	Tech Center Lv. 12, Research Enhancement II Lv. 2
2	3,000	396,600	396,600	1,189,700	2 h 33 min	Tech Center Lv. 13
3	4,800	436,200	436,200	1,308,700	4 h 50 min	Tech Center Lv. 14
4	6,900	610,700	610,700	1,832,200	9 h 40 min	Tech Center Lv. 15
5	9,400	855,000	855,000	2,565,100	18 h 21 min	Tech Center Lv. 16
Total		2,531,800	2,531,800	7,595,500	1 d 13 h 6 min

Extra Barracks

Level	Power	Food	Iron	Coin	Time	Requirements
1	1,700	396,600	396,600	1,189,700	2 h 33 min	Tech Center Lv. 13, Rapid Field Dressing II Lv. 2, Focused Training II Lv. 2

Fast Builder III

Level	Power	Food	Iron	Coin	Time	Requirements
1	1,700	396,600	396,600	1,189,700	2 h 33 min	Tech Center Lv. 13, Extra Barracks Lv. 1
2	3,800	610,700	610,700	1,832,200	9 h 40 min	Tech Center Lv. 15
3	7,100	1,521,900	1,521,900	4,565,800	1 d 9 h 2 min	Tech Center Lv. 17
4	12,100	3,462,400	3,462,400	10,387,200	3 d 17 h 50 min	Tech Center Lv. 19
5	19,400	7,478,800	7,478,800	22,436,300	7 d 20 h 39 min	Tech Center Lv. 21
Total		13,470,400	13,470,400	40,411,200	13 d 11 h 44 min

Hospital Expansion III

Level	Power	Food	Iron	Coin	Time	Requirements
1	1,700	396,600	396,600	1,189,700	2 h 33 min	Tech Center Lv. 13, Fast Builder III Lv. 1
2	3,800	610,700	610,700	1,832,200	9 h 40 min	Tech Center Lv. 15
3	7,100	1,521,900	1,521,900	4,565,800	1 d 9 h 2 min	Tech Center Lv. 17
4	12,100	3,462,400	3,462,400	10,387,200	3 d 17 h 50 min	Tech Center Lv. 19
5	19,400	7,478,800	7,478,800	22,436,300	7 d 20 h 39 min	Tech Center Lv. 21
Total		13,470,400	13,470,400	40,411,200	13 d 11 h 44 min

Barracks Expansion III

Level	Power	Food	Iron	Coin	Time	Requirements
1	1,700	396,600	396,600	1,189,700	2 h 33 min	Tech Center Lv. 13, Fast Builder III Lv. 1
2	3,800	610,700	610,700	1,832,200	9 h 40 min	Tech Center Lv. 15
3	7,100	1,521,900	1,521,900	4,565,800	1 d 9 h 2 min	Tech Center Lv. 17
4	12,100	3,462,400	3,462,400	10,387,200	3 d 17 h 50 min	Tech Center Lv. 19
5	19,400	7,478,800	7,478,800	22,436,300	7 d 20 h 39 min	Tech Center Lv. 21
Total		13,470,400	13,470,400	40,411,200	13 d 11 h 44 min

Research Enhancement III

Level	Power	Food	Iron	Coin	Time	Requirements
1	1,800	436,200	436,200	1,308,700	4 h 50 min	Tech Center Lv. 14, Hospital Expansion III Lv. 1, Barracks Expansion III Lv. 1
2	4,300	855,000	855,000	2,565,100	18 h 21 min	Tech Center Lv. 16
3	8,100	1,978,500	1,978,500	5,935,500	2 d 8 h 9 min	Tech Center Lv. 18
4	13,500	4,154,900	4,154,900	12,464,600	5 d 14 h 45 min	Tech Center Lv. 20
5	22,100	10,470,300	10,470,300	31,410,800	11 d 7 min	Tech Center Lv. 22
Total		17,894,900	17,894,900	53,684,700	19 d 22 h 12 min

Rapid Field Dressing III

Level	Power	Food	Iron	Coin	Time	Requirements
1	1,800	436,200	436,200	1,308,700	4 h 50 min	Tech Center Lv. 14, Research Enhancement III Lv. 1
2	4,300	855,000	855,000	2,565,100	18 h 21 min	Tech Center Lv. 16
3	8,100	1,978,500	1,978,500	5,935,500	2 d 8 h 9 min	Tech Center Lv. 18
4	13,500	4,154,900	4,154,900	12,464,600	5 d 14 h 45 min	Tech Center Lv. 20
5	22,100	10,470,300	10,470,300	31,410,800	11 d 7 min	Tech Center Lv. 22
Total		17,894,900	17,894,900	53,684,700	19 d 22 h 12 min

Focused Training III

Level	Power	Food	Iron	Coin	Time	Requirements
1	1,800	436,200	436,200	1,308,700	4 h 50 min	Tech Center Lv. 14, Research Enhancement III Lv. 1
2	4,300	855,000	855,000	2,565,100	18 h 21 min	Tech Center Lv. 16
3	8,100	1,978,500	1,978,500	5,935,500	2 d 8 h 9 min	Tech Center Lv. 18
4	13,500	4,154,900	4,154,900	12,464,600	5 d 14 h 45 min	Tech Center Lv. 20
5	22,100	10,470,300	10,470,300	31,410,800	11 d 7 min	Tech Center Lv. 22
Total		17,894,900	17,894,900	53,684,700	19 d 22 h 12 min

Efficient Healing

Level	Power	Food	Iron	Coin	Time	Requirements
1	1,800	436,200	436,200	1,308,700	4 h 50 min	Tech Center Lv. 14, Rapid Field Dressing III Lv. 1, Focused Training III Lv. 1
2	5,100	1,521,900	1,521,900	4,565,800	1 d 9 h 2 min	Tech Center Lv. 17
3	10,500	4,154,900	4,154,900	12,464,600	5 d 14 h 45 min	Tech Center Lv. 20
4	19,100	10,470,300	10,470,300	31,410,800	11 d 7 min	Tech Center Lv. 22
5	30,100	17,014,200	17,014,200	51,042,600	18 d 14 h 21 min	Tech Center Lv. 24
Total		33,597,500	33,597,500	100,792,500	36 d 19 h 5 min

Fast Builder IV

Level	Power	Food	Iron	Coin	Time	Requirements
1	2,100	610,700	610,700	1,832,200	9 h 40 min	Tech Center Lv. 15, Efficient Healing Lv. 1
2	5,400	1,521,900	1,521,900	4,565,800	1 d 9 h 2 min	Tech Center Lv. 17
3	10,400	3,462,400	3,462,400	10,387,200	3 d 17 h 50 min	Tech Center Lv. 19
4	17,700	7,478,800	7,478,800	22,436,300	7 d 20 h 39 min	Tech Center Lv. 21
5	27,500	13,611,400	13,611,400	40,834,100	14 d 7 h 21 min	Tech Center Lv. 23
Total		26,685,200	26,685,200	80,055,600	27 d 16 h 32 min

Hospital Expansion IV

Level	Power	Food	Iron	Coin	Time	Requirements
1	2,100	610,700	610,700	1,832,200	9 h 40 min	Tech Center Lv. 15, Fast Builder IV Lv. 1
2	5,400	1,521,900	1,521,900	4,565,800	1 d 9 h 2 min	Tech Center Lv. 17
3	10,400	3,462,400	3,462,400	10,387,200	3 d 17 h 50 min	Tech Center Lv. 19
4	17,700	7,478,800	7,478,800	22,436,300	7 d 20 h 39 min	Tech Center Lv. 21
5	27,500	13,611,400	13,611,400	40,834,100	14 d 7 h 21 min	Tech Center Lv. 23
Total		26,685,200	26,685,200	80,055,600	27 d 16 h 32 min

Barracks Expansion IV

Level	Power	Food	Iron	Coin	Time	Requirements
1	2,100	610,700	610,700	1,832,200	9 h 40 min	Tech Center Lv. 15, Fast Builder IV Lv. 1
2	5,400	1,521,900	1,521,900	4,565,800	1 d 9 h 2 min	Tech Center Lv. 17
3	10,400	3,462,400	3,462,400	10,387,200	3 d 17 h 50 min	Tech Center Lv. 19
4	17,700	7,478,800	7,478,800	22,436,300	7 d 20 h 39 min	Tech Center Lv. 21
5	27,500	13,611,400	13,611,400	40,834,100	14 d 7 h 21 min	Tech Center Lv. 23
Total		26,685,200	26,685,200	80,055,600	27 d 16 h 32 min

Research Enhancement IV

Level	Power	Food	Iron	Coin	Time	Requirements
1	2,500	855,000	855,000	2,565,100	18 h 21 min	Tech Center Lv. 16, Hospital Expansion IV Lv. 1, Barracks Expansion IV Lv. 1
2	6,300	1,978,500	1,978,500	5,935,500	2 d 8 h 9 min	Tech Center Lv. 18
3	11,700	4,154,900	4,154,900	12,464,600	5 d 14 h 45 min	Tech Center Lv. 20
4	20,300	10,470,300	10,470,300	31,410,800	11 d 7 min	Tech Center Lv. 22
5	31,300	17,014,200	17,014,200	51,042,600	18 d 14 h 21 min	Tech Center Lv. 24
Total		34,472,900	34,472,900	103,418,600	38 d 7 h 43 min

Rapid Field Dressing IV

Level	Power	Food	Iron	Coin	Time	Requirements
1	2,500	855,000	855,000	2,565,100	18 h 21 min	Tech Center Lv. 16, Research Enhancement IV Lv. 1
2	6,300	1,978,500	1,978,500	5,935,500	2 d 8 h 9 min	Tech Center Lv. 18
3	11,700	4,154,900	4,154,900	12,464,600	5 d 14 h 45 min	Tech Center Lv. 20
4	20,300	10,470,300	10,470,300	31,410,800	11 d 7 min	Tech Center Lv. 22
5	31,300	17,014,200	17,014,200	51,042,600	18 d 14 h 21 min	Tech Center Lv. 24
Total		34,472,900	34,472,900	103,418,600	38 d 7 h 43 min

Focused Training IV

Level	Power	Food	Iron	Coin	Time	Requirements
1	2,500	855,000	855,000	2,565,100	18 h 21 min	Tech Center Lv. 16, Research Enhancement IV Lv. 1
2	6,300	1,978,500	1,978,500	5,935,500	2 d 8 h 9 min	Tech Center Lv. 18
3	11,700	4,154,900	4,154,900	12,464,600	5 d 14 h 45 min	Tech Center Lv. 20
4	20,300	10,470,300	10,470,300	31,410,800	11 d 7 min	Tech Center Lv. 22
5	31,300	17,014,200	17,014,200	51,042,600	18 d 14 h 21 min	Tech Center Lv. 24
Total		34,472,900	34,472,900	103,418,600	38 d 7 h 43 min

Drill Grounds Expansion

Level	Power	Food	Iron	Coin	Time	Requirements
1	3,300	1,521,900	1,521,900	4,565,800	1 d 9 h 2 min	Tech Center Lv. 17, Rapid Field Dressing IV Lv. 1, Focused Training IV Lv. 1
2	8,300	3,462,400	3,462,400	10,387,200	3 d 17 h 50 min	Tech Center Lv. 19
3	15,600	7,478,800	7,478,800	22,436,300	7 d 20 h 39 min	Tech Center Lv. 21
4	25,400	13,611,400	13,611,400	40,834,100	14 d 7 h 21 min	Tech Center Lv. 23
5	37,700	21,267,800	21,267,800	63,803,300	22 d 7 h 37 min	Tech Center Lv. 25
Total		47,342,300	47,342,300	142,026,700	49 d 14 h 29 min

Survival Skills

Level	Power	Food	Iron	Coin	Time	Requirements
1	3,800	1,978,500	1,978,500	5,935,500	2 d 8 h 9 min	Tech Center Lv. 18, Drill Grounds Expansion Lv. 1
2	9,200	4,154,900	4,154,900	12,464,600	5 d 14 h 45 min	Tech Center Lv. 20
3	17,800	10,470,300	10,470,300	31,410,800	11 d 7 min	Tech Center Lv. 22
4	28,800	17,014,200	17,014,200	51,042,600	18 d 14 h 21 min	Tech Center Lv. 24
5	44,800	36,155,200	36,155,200	108,465,600	26 d 18 h 45 min	Tech Center Lv. 26
Total		69,773,100	69,773,100	209,319,100	64 d 8 h 7 min

Where these figures come from

From player sources and submitted screenshots.

Updated: 2026-10-02