Fuel

Fuel is a resource your nomad city needs to take off and fly to a different destination. The Fuel you need to take off depends on the level of your City Core and how many Flying Devices you have built.

Refining fuel is not possible with the technology at your disposal in the early game, so it is a highly valued resource. You can only gather it scrapping Ancient ruins, or craft it there or in Fuel Depots if you have the necessary resources. Later on, you can research the Cauldron, which allows you to produce Fuel.

Fuel is a global resource and doesn't need transportation.

Production
Produced at the Cauldron.

Ancient Ruins
Fuel Depots

Fuel Depot size is randomly chosen during map generation. They can be of small, medium and large size, with different requirements and yields.

Take-Off requirements
City Core I: 5 Fuel

City Core II: +30% (6 Fuel)

City Core III: +35% (9 Fuel)

City Core IV: +40% (12 Fuel)

City Core V: +50% (18 Fuel)

Flying Device: +3 per device