"Halo 3" was released on September 25, 2007, in three separate retail versions: "Standard", "Limited", and "Legendary". The Standard Edition contains the game disc, manual, and a small poster with the game's control-map and artwork. The Limited Edition, contained in a metal case, contains the game disc, manual, poster, Xbox 360 bonus disc with featurettes, and a hardcover-bound "Bestiarum", a collection of information and art covering the species, cultures, and civilizations of "Halo 3". The Legendary Edition contains the game disc, manual, poster, interactive bonus disc, the Bestiarum on a DVD, Legendary DVD containing exclusive content, and a scale replica of the Master Chief's helmet as a case for the three discs. The slip-cover packaging unfolds into a large heavy-stock poster of Master Chief. Some of the Limited Edition versions of "Halo 3" were found to have a defect in the hub that kept the discs in place, which could lead to scratched discs. Microsoft introduced a disc replacement program in response.