Units DEF I
Increase units' DEF
Max level: 5
Research levels
| Level |  Power |  Food |  Iron |  Coin | Base research time | Requirements |
|---|---|---|---|---|---|---|
| 1 | 300 | 10,100 | 10,100 | 30,400 | 32 min |
|
| 2 | 800 | 30,400 | 30,400 | 91,100 | 42 min |
|
| 3 | 1,500 | 60,800 | 60,800 | 182,300 | 54 min |
|
| 4 | 2,400 | 97,200 | 97,200 | 291,600 | 1 hr 10 min |
|
| 5 | 3,500 | 155,500 | 155,500 | 466,600 | 1 hr 31 min |
|