Some unfinished television series may be revived for various reasons and ultimately given a proper ending. Two ubiquitous examples of unfinished series that were finally completed years after they were cancelled were "Samurai Jack" and the 2008 3D "", two animated series that ran for several seasons on Cartoon Network before being cancelled without having a proper ending in place. "Samurai Jack" was cancelled in 2004 after four seasons without a conclusive resolution to its central plot, which Adult Swim eventually provided when it revived the series for a fifth and final season in 2017. "Clone Wars" was cancelled in 2013 partway through its planned run in favor of other "Star Wars" projects headed by Disney after it acquired Lucasfilm a year prior. The series would remain unfinished for years until Disney and Lucasfilm decided to revive and finally finish it with one final season, set to be exclusively released on Disney+ on February 17, 2020. "Scooby-Doo! and the Curse of the 13th Ghost" was commissioned to resolve a plot hole in the relatively obscure mid-1980s Saturday morning cartoon "The 13 Ghosts of Scooby-Doo". In other instances, the revived series may appear to be merely a means to attract nostalgic viewers, with no plan to give a proper conclusion to the overarching plot threads left unresolved at the end of the original run; such criticism was leveled at "The X-Files" for its 10th and 11th seasons, in 2016 and 2018, which also both ended on a frustrating cliffhanger, resulting in a strong backlash toward each finale, even though some earlier episodes were praised.