Forge
The Forge increases the speed of tools productions at the "Siege workshop" and the "Defense workshop".
| Level | Rubies cost | Speed Increase |
|---|---|---|
| 1 | 8,500 | +4% |
| 2 | 8,800 | +8% |
| 3 | 9,100 | +12% |
| 4 | 9,400 | +16% |
| 5 | 9,700 | +20% |
| 6 | 10,000 | +24% |
| 7 | 10,300 | +28% |
| 8 | 10,600 | +32% |
| 9 | 10,900 | +36% |
| 10 | 11,200 | +40% |
| 11 | 11,500 | +44% |
| 12 | 11,800 | +48% |
| 13 | 12,100 | +52% |
| 14 | 12,400 | +56% |
| 15 | 12,700 | +60% |
| 16 | 13,000 | +64% |
| 17 | 13,300 | +68% |
| 18 | 13,600 | +72% |
| 19 | 13,900 | +76% |
| 20 | 14,200 | +80% |
| Total | 227,000 |
