RESEARCH · MAX LEVEL 5
Rock Solid I
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 | 75,183,700 | 1,239,960 | Scholar Tower I Lv. 25 | Tribe Defense II · Level 3 / Legion Defense II · Level 3 / Ranger Defense II · Level 3 |
| 2 | 0 | 0 | 75,183,700 | 1,239,960 | Scholar Tower I Lv. 25 | |
| 3 | 0 | 0 | 82,702,100 | 1,487,940 | Scholar Tower I Lv. 26 | Tribe Defense II · Level 5 / Legion Defense II · Level 5 / Ranger Defense II · Level 5 |
| 4 | 0 | 0 | 82,702,100 | 1,487,940 | Scholar Tower I Lv. 26 | |
| 5 | 0 | 0 | 90,972,300 | 1,636,740 | Scholar Tower I Lv. 27 |