Gravity Falls type TV Show

Gravity Falls is coming to an end.

Creator Alex Hirsch took to his Tumblr to announce that the series’ next two episodes will be its last. And he made one thing clear: It was his decision.

“There are so many shows that go on endlessly until they lose their original spark, or mysteries that are cancelled before they ever get a chance to payoff,” Hirsch writes. “But I wanted Gravity Falls to have a mystery that had a real answer, an adventure that had a real climax, and an ending that had a real conclusion for the characters I care so much about. This is very unusual in television and a pretty big experiment, and Disney for their part has been enormously supportive.”

“Alex Hirsch had a masterful plan for the stories and characters of Gravity Falls and, through 40 episodes and 17 shorts, he and a team of outstanding writers, artists and actors consistently delivered an inspired and unique story,” Disney said in a statement. “Alex made the decision to conclude the story at this time, and while we’re disappointed we all won’t have the opportunity to explore more of the Gravity Falls world, we respect his creative vision.”

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The show debuted in 2012 to rave reviews. It centers on the experiences of twin 12-year-olds in the titular small town that has more to it than it seems. Gravity Falls is currently in the midst of what Hirsch described to EW as a “Weirdmageddon,” a multi-episode arc that he said “completely upends” the rules of Gravity Falls.

Gravity Falls boasts an impressive voice cast featuring Hirsch, Jason Ritter, Kristen Schaal, and Linda Cardellini. The second-to-last episode airs on Monday at 8 p.m. on Disney XD. There is no announced airdate for the series finale.

Read Hirsch’s full, lengthy Tumblr post here.