Simulation Theory is the eighth studio album by the English rock band Muse. It was released on 9 November 2018 through Warner Bros. Records and Helium-3. Muse co-produced the album with Rich Costey, Mike Elizondo, Shellback, and Timbaland. Following the darker themes of Muse's prior albums, Simulation Theory incorporates lighter influences from science fiction and 1980s pop culture, with extensive use of synthesisers. The contemporary political climate of the United States informed the lyrics.