Defense Shield I
Strengthen the overall defensive power of troops.
Research Levels
| Level | Value | Power | Prerequisites | Cost | Research Time |
|---|---|---|---|---|---|
| 1 | 2% | 1K |  25K 25K 25K 25K | 3h 28m 20s | |
| 2 | 4% | 3K | 50K50K50K50K | 6h 56m 40s | |
| 3 | 6% | 7K | 100K100K100K100K | 13h 53m 20s | |
| 4 | 8% | 15K | 200K200K200K200K | 1d 3h 46m | |
| 5 | 10% | 31K | 400K400K400K400K | 2d 7h 33m |
