| Defenses | Army | Resources | Troops | Mech Unit | Other |
1.Housing space,training time and barrack level needed for per Bomber
| Housing Space | Traning Time | Barrack Level |
| 1 | 2m | 5 |
2.HP and damage of Gunners of all levels and cost for upgrade
| Picture | Level | Training cost | HP | Damage per sec | R&D Center level for upgrade |
Upgrade cost | Upgrade time |
 |
1 | 500 | 20 | 12 | 0 | 0 | 0 |
|
2 | 1000 | 24 | 16 | 2 | 100,000 | 1d |
 |
3 | 1500 | 29 | 24 | 4 | 400,000 | 2d |
|
4 | 2500 | 35 | 32 | 5 | 1,000,000 | 3 d |
 |
5 | 3000 | 42 | 46 | 6 | 2,750,000 | 6 d |