Yu-Gi-Oh! 5D's (遊☆戯☆王5D's（ファイブディーズ） Yūgiō Faibu Dīzu?, lit. "Game King: 5D's") is a Yu-Gi-Oh! series which aired in Japan between April 2, 2008 and March 30, 2011, following the previous series, Yu-Gi-Oh! GX and will be succeeded by Yu-Gi-Oh! Zexal on April 11, 2011. 5D's is also the first Yu-Gi-Oh! series to be broadcast in widescreen.
Much like the previous series, it focuses around characters playing a card game Duel Monsters, despite the fact the 'Duel Monsters' tagline has been dropped from the Japanese title. This series introduces new types of cards such as Synchro Monsters, that are reflected in the Official Trading Card Game. During the series, in addition to regular duels using Duel Disks, a new type of Duel Disk, motorcycle-like vehicles, called "Duel Runners" ("D-Wheels" in the Japanese version) is used, and the duelists engage in games called "Turbo Duels" ("Riding Duels" in the Japanese version). Yusei Fudo, the 18 year-old main protagonist, has "Stardust Dragon" as his main card, which is the cover card for the Duelist Genesis trading card set.
As with the previous two series (Yu-Gi-Oh! Duel Monsters and Yu-Gi-Oh! Duel Monsters GX), this series has been acquired by 4Kids Entertainment for broadcasting in the United States in September 2008. It began airing on The CW4Kids, starting from September 13, 2008. The English language dub premiered on July 24 at San Diego Comic-Con 2008,  where the first English dubbed episode was previewed. Like the previous two series, changes have been made to the plot, cards, localized character names. On June 1, 2009, Yu-Gi-Oh 5D's started airing 5 days a week on Cartoon Network. A manga based on the show began serialization in V-Jump Monthly Magazine from August 2009.