HP Increase
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 | 0 | 0 | 121,084,100 | 0 | 25d 5h 9m |
| 1 → 2 | 0 | 0 | 121,084,100 | 0 | 25d 5h 9m |
| 2 → 3 | 0 | 0 | 133,192,600 | 0 | 27d 17h 39m |
| 3 → 4 | 0 | 0 | 133,192,600 | 0 | 27d 17h 39m |
| 4 → 5 | 0 | 0 | 143,848,000 | 0 | 29d 22h 55m |
| 5 → 6 | 0 | 0 | 143,848,000 | 0 | 29d 22h 55m |
| 6 → 7 | 0 | 0 | 152,478,800 | 0 | 31d 18h 3m |
| 7 → 8 | 0 | 0 | 152,478,800 | 0 | 31d 18h 3m |
| 8 → 9 | 0 | 0 | 158,578,000 | 0 | 33d 31m |
| 9 → 10 | 0 | 0 | 158,578,000 | 0 | 33d 31m |
Requirements by target level
Level 1
- Rock Solid II level 1
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 2
- Rock Solid II level 2
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 3
- Rock Solid II level 3
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 4
- Rock Solid II level 4
- (Scholar Tower I level 30 OR Scholar Tower II level 30)
Level 5
- Rock Solid II 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.