- Reach level 6, open the Technology menu and unlock Sign for 1 Technology point.
- Collect what you need:
- Open the Build menu (B on PC), go to the Other tab, then Ancient Civilization, and pick Sign. Place it inside your base.
- Building it takes 1,000 work. Pals with Handiwork help you build faster.
Sign
Can be written on.
Use for memos or to communicate with others.