They released "The Crusher" in 2001, and went on tour to support it with Marduk, Vader. It was planned to be held in the United States, but was cancelled because of the September 11 attacks. It was held a year later later instead, but this time without Marduk. In April 2002 the band toured Europe with Vomitory and in August performed at Wacken Open Air in front of 12,000 fans. "Versus The World", their 4th studio album, was released on 18 November 2002. The bonus edition of the album included their earlier demos. Touring continued until Spring of 2004 when the band started working on the "Fate of Norns" album which was released on 6 September 2004. With Oden on Our Side was released two years later, and Allmusic said about the band, "Amon Amarth continue to be champions of the worldwide death metal tournament."