"Radioactive" is a song by American pop rock band Imagine Dragons from their major-label debut EP Continued Silence and later on their debut studio album, Night Visions (2012), as the lead single. It was first sent to modern rock radio on October 29, 2012, and then released to contemporary hit radio on April 9, 2013. Musically, "Radioactive" is an electronic rock and alternative rock song with elements of dubstep.