The album spawned the singles ' Feel Good Inc.', ' Dare', ' Dirty Harry', ' Kids with Guns', and ' El Mañana'. Outperforming their debut, the album has sold eight million copies worldwide. The album reached number one on the UK Albums Chart and number 6 on the US Billboard 200, and was later certified six times platinum in the UK and double platinum in the US.

Upon its release, Demon Days was a chart success reaching the top 10 in 22 countries.

Almost all visuals associated with the album were designed by Gorillaz co-creator Jamie Hewlett, under his design company Zombie Flesh Eaters. As with the band's eponymous 2001 debut, the release of Demon Days and its respective live performances were both accompanied by various multimedia, including interactive features on the Gorillaz website, a total of four animated music videos, and animatics for select videos. Produced by the band, Danger Mouse, Jason Cox, and James Dring, the album features contributions from De La Soul, Neneh Cherry, Martina Topley-Bird, Roots Manuva, MF Doom, Ike Turner, Bootie Brown of the Pharcyde, Shaun Ryder, and Dennis Hopper. It was first released on in Japan and on in the United Kingdom by Parlophone and in the United States by Virgin Records. Demon Days is the second studio album by British virtual band Gorillaz.

All gorillaz albums in order