"Radioactive" is a song recorded by American rock band Imagine Dragons for their major-label debut EP Continued Silence and later on their debut studio album, Night Visions (2012), as the opening track. "Radioactive" was first sent to modern rock radio on October 29, 2012, and released to contemporary radio on April 9, 2013. Musically, "Radioactive" is an electronic rock song with elements of alternative rock and contains cryptic lyrics about apocalyptic and revolutionist themes.