Slayer released twelve studio albums, two live albums, a box set, six music videos, two extended plays and a cover album. Four of the band's studio albums have received gold certification in the United States. Slayer sold 5 million copies in the United States from 1991 to 2013, according to Nielsen SoundScan, and over 20 million worldwide.
World Painted Blood (2009–2011), Araya stated uncertainty about the future of the band, and that he could not see himself continuing the career at a later age. He said that once the band finished its upcoming album, which was the final record in their contract, the band would sit down and discuss its future. King was optimistic that the band would produce at least another two albums before considering to disband: "We're talking of going in the studio next February 2009 and getting the next record out so if we do things in a timely manner I don't see there's any reason why we can't have more than one album out."Slayer, along with Trivium, Mastodon, and Amon Amarth, teamed up for a European tour titled 'The Unholy Alliance: Chapter III', throughout October and November 2008.Slayer headlined the second Mayhem Festival in the summer of 2009. Slayer, along with Megadeth, also co-headlined Canadian Carnage, the first time they performed together in more than 15 years when they co-headlined four shows in Canada in late June 2009 with openers Machine Head and Suicide Silence.