Tank DEF I
Increase Tank Heroes' DEF
Max level: 5
Research levels
| Level |  Power |  Food |  Iron |  Coin | Base research time | Requirements |
|---|---|---|---|---|---|---|
| 1 | 800 | 87,500 | 87,500 | 262,400 | 53 min |
|
| 2 | 2,600 | 419,900 | 419,900 | 1,259,700 | 2 hr 33 min |
|
| 3 | 5,400 | 1,099,300 | 1,099,300 | 3,297,900 | 14 hr 30 min |
|
| 4 | 10,400 | 3,561,300 | 3,561,300 | 10,684,000 | 3 days 12 hr 14 min |
|
| 5 | 20,200 | 13,461,800 | 13,461,800 | 40,385,400 | 11 days 18 hr 59 min |
|