Combat Experience increases the experience awarded to heroes by 1% per level, up to a maximum of 10%.
Upgrades
| Level | Total % Increase | Resources needed to upgrade | Fame | Requirements | |||||
| Lumber | Ore | Sulfur | Crystal | Gold | Time(hh:mm:ss) | ||||
| 1 | 1% | 80 | 80 | 40 | 40 | 800 | 00:32:00 | 24 | Magic Tower lvl 1; Hero Tower lvl 1 |
| 2 | 2% | 320 | 320 | 160 | 160 | 3200 | 01:36:00 | 96 | Magic Tower lvl 2 |
| 3 | 3% | ||||||||
| 4 | 4% | 1408 | 1408 | 704 | 704 | 14080 | 08:09:36 | 384 | Magic Tower lvl 4 |
| 5 | 5% | ||||||||
| 6 | 6% | ||||||||
| 7 | 7% | ||||||||
| 8 | 8% | ||||||||
| 9 | 9% | ||||||||
| 10 | 10% | ||||||||