It's a dark day in the Land of Ooo, as Cartoon Network announced this morning that "Adventure Time" will end in 2018.

Created by Pendleton Ward, the acclaimed animated series launched in 2010, telling the animated adventures of Finn the Human (voiced by Jeremy Shada) and his best friend and adoptive brother Jake the Dog (John DiMaggio) in the magical, if post-apocalyptic, Land of Ooo.

Before the series ends with its ninth season, however, Cartoon Network promises new episodes, miniseries, specials and more, bringing "Adventure Time" to "142 half-hours of content."

The series has earned a cult-like following over the past eight seasons, to say nothing of six Pimetime Emmy Awards, a Peabody Award and two Annie Awards. In that time, it's also inspired a comic book series, video games and plenty of merchandise, including apparel, a line of Doc Marten boots, and a LEGO set.

“'Adventure Time' was a passion project for the people on the crew who poured their heart into the art and stories," Ward said in a statement. "We tried to put into every episode something genuine and telling from our lives, and make a show that was personal to us, and that had jokes too! I’m really happy that it connected with an audience for so long. It’s a special thing, I think.”

(via Deadline)