Research Upgrade I
Base reference costs and prerequisites. Supported through level 5; each row shows an explicit upgrade transition.
Plan this upgradeUpgrade costs
| From → To | Wood | Food | Coins | Medals | Base work |
|---|---|---|---|---|---|
| 0 → 1 | 0 | 0 | 7,600 | 0 | 21m |
| 1 → 2 | 0 | 0 | 7,600 | 0 | 21m |
| 2 → 3 | 0 | 0 | 15,200 | 0 | 41m |
| 3 → 4 | 0 | 0 | 15,200 | 0 | 41m |
| 4 → 5 | 0 | 0 | 45,600 | 0 | 1h 21m |
Requirements by target level
Level 1
- Food Production I level 5
- Wood Production I level 5
- Coins Production I level 5
- (Scholar Tower I level 5 OR Scholar Tower II level 5)
Level 2
- (Scholar Tower I level 5 OR Scholar Tower II level 5)
Level 3
- (Scholar Tower I level 6 OR Scholar Tower II level 6)
Level 4
- (Scholar Tower I level 6 OR Scholar Tower II level 6)
Level 5
- (Scholar Tower I level 7 OR Scholar Tower II level 7)
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.