The Stone Storage increases your Stone storage capacity.
Stone Storage Tips
- The Stone Storage protects your Stone from enemy attacks.
Level 1 
Level 2-3 Level 4-5 
Level 6-7 
Level 8 
Level 10
- Building size
- 3×3
- Resource
- Stone
- HQ Level 1-5
- No Stone Storages
- HQ Level 6-9
- 1 Stone Storage
- HQ Level 10-15
- 2 Stone Storages
- HQ Level 16-22
- 3 Stone Storages
| Level | Health | Capacity | Upgrade Cost Wood | Upgrade Cost Stone | Upgrade Cost Iron | Upgrade Time | HQ Level | XP Gain |
|---|---|---|---|---|---|---|---|---|
| 1 | 1,000 | 4,000 | 6,600 | 1,160 | N/A | 1h | 6 | 10 |
| 2 | 1,200 | 8,000 | 10,300 | 2,060 | N/A | 1h 45m | 7 | 13 |
| 3 | 1,400 | 16,000 | 17,800 | 3,900 | N/A | 2h 30m | 8 | 15 |
| 4 | 1,700 | 32,000 | 29,000 | 6,900 | 1,840 | 3h 15m | 9 | 18 |
| 5 | 2,000 | 64,000 | 64,000 | 23,300 | 6,700 | 5h | 11 | 24 |
| 6 | 2,400 | 125,000 | 101,000 | 47,000 | 12,400 | 6h | 12 | 26 |
| 7 | 2,900 | 250,000 | 147,000 | 89,000 | 25,200 | 7h | 13 | 28 |
| 8 | 3,500 | 500,000 | 212,000 | 185,000 | 51,000 | 8h | 14 | 37 |
| 9 | 4,200 | 1,000,000 | 380,000 | 286,000 | 104,000 | 10h | 15 | 42 |
| 10 | 5,000 | 2,000,000 | 810,000 | 670,000 | 420,000 | 12h | 17 | 50 |