Build the Tower and Install the Turret
- Find the TURRET TOWER purchase pad on the corner platform connected to the wall walkway. Buy it for $75,000.
- Climb the metal ladder on the outside of the corner tower.
- Step onto the tower-top TURRET $150K pad to purchase the installation.
- Wait for the helicopter to lower the turret onto the tower.
The tower and its turret are separate purchases: buying the tower alone does not complete the installation. If your base displays UNLOCK TURRET TOWER, follow the nearby green arrow toward the unlock area.