Fallout 4 was the planned sequel to the cancelled Fallout 3, to be developed by Black Isle Studios. Production never started on the project, as both games were canceled in 2004 when Interplay Entertainment licensed the rights to create and publish three Fallout games to Bethesda Softworks.
- ↑ Denver design documents, page 9: "The guys from Caesar's legion are a mystery. What are they up to? If you're allied with the Blackfoots you have an in with them, but they mainly want to keep away from the 'primitives and assholes' who live in this part of the continent. You can find out a little bit about them and get some hints about the direction of the next game in the series."