Thirteen (stylized as TH1RT3EN) is the thirteenth studio album by American thrash metal band Megadeth. It was released worldwide on November 1, 2011, by Roadrunner Records, although the album was released on October 26, 2011 for Japan. Thirteen is the first Megadeth studio album since The World Needs a Hero (2001) to feature bassist and founding member David Ellefson, who returned to the band in 2010. Thirteen debuted at number 11 on the Billboard 200 chart, selling 42,000 copies in its first week. The album broke into the top 20 in several other markets as well. It has sold about 120,000 copies in the United States as of December 2012. The album has received largely positive reviews from critics.