RESEARCH · MAX LEVEL 1
Extra Lumber Mill
Compare required levels and costs before progressing.
Level costs & requirements
Each row describes the target level. Prerequisite material costs are separate.
| Target level | Wood | Food | Coins | Base time (seconds) | Required buildings | Research prerequisites |
|---|---|---|---|---|---|---|
| 1 | 0 | 0 | 15,200 | 2,460 | Scholar Tower I Lv. 6 | Rapid Construction I · Level 5; Research Upgrade I · Level 5 |