disc and downloaded by thousands of people within 24 hours. Videos of the ending of Halo 3, obtained from the leaked copy, were captured and posted on video sharing sites. 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. On the day before its official release, 4.2 million units of Halo 3 were in retail outlets. Halo 3 was made a free download for Xbox Live Gold subscribers through the "Games with Gold" program in October 2013. It became playable on the Xbox One via backwards compatibility in 2017. An Xbox One-native version of the game, presenting the graphics at 1080p and 60 frames per second, was included as part of Halo: The Master Chief Collection for the Xbox One in 2014. Halo 3 was re-released again as part of the Windows version of The Master Chief Collection in 2020. Downloadable content Halo 3 supports multiplayer map downloadable content as well as game updates via Xbox Live. The first three post-release multiplayer maps, "Standoff", "Rat's Nest", and "Foundry", were released as a pack on December 11, 2007, collectively known as the "Heroic Map Pack". A second group of three maps including a remake of Halo 2 map "Lockout", titled "Blackout", a new map "Ghost Town" and a remake of Halo: Combat Evolved map "Sidewinder", titled "Avalanche" were bundled as the "Legendary Map Pack", on April 15, 2008. These maps introduced visual filters to the Forge pallet, which change the way the maps look. A remake of the