Square Enix is collecting the chapters in tankōbon form. The first volume was released on January 22, 2002, and as of April 22, 2010, 25 volumes have been released. A few chapters have been rereleased in Japan in two "Extra number" magazines and Fullmetal Alchemist: The First Attack, which features the first nine chapters of the manga as well as other side stories. The animation studio Bones adapted the manga into two animated adaptations. The first ran for 51 episodes with several changes made to the manga and it was followed by a film sequel in 2005. In April 2009, Bones started airing a new anime adaptation of the manga entitled Fullmetal Alchemist: Brotherhood for the North American release.