. "The Manhattan Project is a project in Civilization VI. It becomes available after researching Nuclear Fission. Once completed, the Manhattan Project allows the player to undertake the Build Nuclear Device project."@en . "The Manhattan Project is a project in Civilization VI. It becomes available after researching Nuclear Fission. Once completed, the Manhattan Project allows the player to undertake the Build Nuclear Device project."@en . . "Manhattan Project (Civ6)"@en .