Prior to the album's release, Imagine Dragons released a number of singles for other projects including a song for the film Transformers: Age of Extinction, called "Battle Cry" (June 2014) and song "Warriors" for the 2014 League of Legends World Championship (September 2014).
Sebelum merilis album, Imagine Dragons merilis sejumlah single untuk proyek-proyek lainnya termasuk lagu untuk film Transformers: Age of Extinction, yang berjudul "Battle Cry" (Juni 2014) dan lagu "Warriors" untuk Kejuaraan Dunia League of Legends (September 2014).