Advanced Category structure
Hero Academy
The Hero Academy allows you to retrain heroes and troops, as well as train special legendary heroes.
Max Level10
Base Limit1 buildings
Total Requirements
From level 1 to max level
My Building LevelLevel 0
🏰
Upgrade Time
Single56d 1h
Iron Cost Single26,791,000
Academy Levels
Unlock at Level 1
Common Heroes
One-Time Research
514,800 Food
514,800 Food1h
Program Goal
Train 1* Heroes
Process Time
1m
Cost per run
5,000 Food, 1 Recruit
Unlock at Level 2
Uncommon Troops
One-Time Research716,500 Food
716,500 Food1d
Program Goal
Train 2* Troops
Process Time
9h
Cost per run
50,800 Iron, 50 Recruits
Unlock at Level 3
Uncommon Heroes
One-Time Research978,000 Food
978,000 Food1h
Program Goal
Train 2* Heroes
Process Time
1m
Cost per run
11,000 Food, 8 Recruits
Unlock at Level 4
Uncommon Troops
One-Time Research1,277,500 Food
1,277,500 Food1d
Program Goal
Train 2* Troops
Process Time
21h
Cost per run
103,000 Iron, 100 Recruits
Unlock at Level 5
Rare Heroes
One-Time Research1,459,100 Food
1,459,100 Food1d
Program Goal
Retrain 3* Heroes
Process Time
9h
Cost per run
100,000 Food, 30 Recruits
Unlock at Level 6
Rare Troops
One-Time Research1,923,500 Food
1,923,500 Food1d
Program Goal
Train 3* Troops
Process Time
2d 12h
Cost per run
151,000 Iron, 150 Recruits
Unlock at Level 7
Trainer Heroes
One-Time Research2,225,100 Food
2,225,100 Food1d
Program Goal
Train 1-2* Trainer Heroes
Process Time
9h
Cost per run
45,000 Food, 30 Recruits
Unlock at Level 8
Epic Heroes
One-Time Research2,927,500 Food
2,927,500 Food1d
Program Goal
Retrain 4* Heroes
Process Time
2d 12h
Cost per run
200,000 Food, 100 Recruits
Unlock at Level 9
Epic Troops
One-Time Research3,287,000 Food
3,287,000 Food7d
Program Goal
Retrain 4* Troops
Process Time
7d
Cost per run
1,203,000 Iron, 200 Recruits
Unlock at Level 10
Legendary Heroes
One-Time Research3,311,000 Food
3,311,000 Food14d
Program Goal
Retrain 5* Heroes
Process Time
7d
Cost per run
1,288,000 Food, 300 Recruits
Upgrade Progression
Click a level to mark your base progress
StructureLevel 1
Upgrade Cost 2,610,000
2,610,000Time
StructureLevel 2
Upgrade Cost 2,629,000
2,629,000Time1d 8h
StructureLevel 3
Upgrade Cost 2,644,000
2,644,000Time2d
StructureLevel 4
Upgrade Cost 2,659,000
2,659,000Time2d 22h
StructureLevel 5
Upgrade Cost 2,671,000
2,671,000Time4d 2h
StructureLevel 6
Upgrade Cost 2,686,000
2,686,000Time5d 13h
StructureLevel 7
Upgrade Cost 2,700,000
2,700,000Time7d 9h
StructureLevel 8
Upgrade Cost 2,715,000
2,715,000Time9d 6h
StructureLevel 9
Upgrade Cost 2,729,000
2,729,000Time11d
StructureLevel 10
Upgrade Cost 2,748,000
2,748,000Time12d 13h
Strategic Usage
Efficiency Tip Always try to synchronize your upgrades. Start long-duration upgrades (like Stronghold or Advanced Storages) before long sleep periods or work shifts.
Storage Priority Never let your Storages overflow. If your resources hit the cap, your Mines and Farms effectively shut down, wasting valuable production time.