Oil Derrick produces Oil.
To build Oil Derrick it takes:
- 10th lvl of Main Headquarters;
- 1 free Builder;
- 60 000 Woods;
- 15 000 Irons.
Upgrade Oil Derrick to increase its productivity.
Oil Derrick produces Oil.
To build Oil Derrick it takes:
Upgrade Oil Derrick to increase its productivity.