Iron Defense II
Base reference costs and prerequisites. Supported through level 10; each row shows an explicit upgrade transition.
Plan this upgradeUpgrade costs
| From → To | Wood | Food | Coins | Medals | Base work |
|---|---|---|---|---|---|
| 0 → 1 | 28,193,900 | 28,193,900 | 84,581,700 | 3,380 | 12d 18h 10m |
| 1 → 2 | 28,193,900 | 28,193,900 | 84,581,700 | 3,380 | 12d 18h 10m |
| 2 → 3 | 31,013,300 | 31,013,300 | 93,039,900 | 3,600 | 15d 7h 24m |
| 3 → 4 | 31,013,300 | 31,013,300 | 93,039,900 | 3,600 | 15d 7h 24m |
| 4 → 5 | 34,114,600 | 34,114,600 | 102,343,900 | 3,830 | 16d 20h 8m |
| 5 → 6 | 34,114,600 | 34,114,600 | 102,343,900 | 3,830 | 16d 20h 8m |
| 6 → 7 | 37,526,100 | 37,526,100 | 112,578,200 | 4,050 | 18d 12h 33m |
| 7 → 8 | 37,526,100 | 37,526,100 | 112,578,200 | 4,050 | 18d 12h 33m |
| 8 → 9 | 41,278,700 | 41,278,700 | 123,836,100 | 4,280 | 20d 9h |
| 9 → 10 | 41,278,700 | 41,278,700 | 123,836,100 | 4,280 | 20d 9h |
Requirements by target level
Level 1
- Ward Tent Expansion VI level 1
- Healing Cost I level 1
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 2
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 3
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 4
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 5
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 6
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 7
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 8
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 9
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 10
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Reference research rows describe the level being reached. Prerequisites are expanded by the planner, including shared requirements once and all required building gates.
Reference snapshot: 24 October 2026. Community table agreement does not mean every value was independently verified in-game. View sources and uncertainty.