Build Nuclear Device is a project in Civilization VI. It becomes available after researching Nuclear Fission and completing the Manhattan Project.
This project requires Uranium (10 Uranium in Gathering Storm) and can be undertaken multiple times. Each time it is completed, it adds one Nuclear Device - a one-use weapon with a blast radius of 1 and a maintenance cost of 14 Gold per turn - to the player's arsenal.
Trivia
- The project icon shows the Little Boy atomic bomb that was dropped on Hiroshima.