| Preferred target | Attack type | Housing space | Movement speed | Delay between attacks | Forge level required |
|---|---|---|---|---|---|
| Walls | Area splash | 2 | 24 | 1 sec | 5 |
| Level | Damage per sec | Damage to walls | Hitpoints | Cost (Food) | Research cost (Food) | Research time | University level required |
|---|---|---|---|---|---|---|---|
| 1 | 12 | 480 | 20 | 1 000 | |||
| 2 | 16 | 640 | 24 | 1 500 | 100 000 | 1 day | 2 |
| 3 | 24 | 960 | 29 | 2 000 | 250 000 | 2 days | 4 |
| 4 | 32 | 1 280 | 35 | 2 500 | 750 000 | 3 days | 5 |
| 5 | 46 | 1 840 | 42 | 3 000 | 2 250 000 | 5 days | 6 |