Aircraft DEF II
Increase Aircraft Heroes' DEF
Max level: 5
Research levels
| Level |  Power |  Food |  Iron |  Coin | Base research time | Requirements |
|---|---|---|---|---|---|---|
| 1 | 9,800 | 13,461,800 | 13,461,800 | 40,385,400 | 11 days 18 hr 59 min |
|
| 2 | 24,500 | 30,625,600 | 30,625,600 | 91,876,700 | 27 days 21 hr 32 min |
|
| 3 | 49,800 | 91,111,100 | 91,111,100 | 273,333,300 | 48 days 4 hr 56 min |
|
| 4 | 83,900 | 165,822,200 | 165,822,200 | 497,466,500 | 69 days 9 hr 59 min |
|
| 5 | 124,300 | 232,151,000 | 232,151,000 | 696,453,100 | 83 days 7 hr 11 min |
|