Command Center 21 is here and it's time to upgrade your base! From September 26th at 10am PDT to September 30th at 10am PDT, take advantage of 20% to 70% for Gold Upgrades on these jey Buildings!
| Buildings | Discount % |
| Air Hangar | 20 |
| Academy | 20 |
| Tech Center | 20 |
| Airfield | 30 |
| Barracks | 30 |
| War Factory | 30 |
| Storage | 30 |
| Weapons Lab | 30 |
| Mercenary Camp | 70 |
| Armory | 70 |
| Stronghold | 70 |
| Bunker | 70 |
| Watchtower | 70 |
| Defense Lab | 30 |
| Helipad Delta | 70 |
| Helipad Tango | 70 |
| Radio Tower | 70 |
| Workshop | 70 |
| Thorium Vault | 70 |
| Metal Storage | 70 |
| Oil Storage | 70 |
| Thorium Mine | 70 |
| TacOps | 30 |
| Construction Yard | 30 |
| Agency | 30 |
| Mine Factory | 30 |