Four new, hour-long Adventure Time specials are coming to HBO Max, with the first two premiering in 2020.

Adventure Time: Distant Lands poster

The series of specials, called Adventure Time: Distant Lands, will dive back into the world of the Cartoon Network series, which concluded in September 2018. Check out Finn, Jake, and company in the first poster for Distant Lands below.The two specials set to premiere in 2020 are titled BMO and Obsidian. BMO follows the series' sentient video game console as it attempts to handle a "deadly space emergency in the farthest reaches of the galaxy," according to HBO. Obsidian follows "Marceline and Princess Bubblegum as they journey to the imposing, beautiful Glass Kingdom—and deep into their tumultuous past—to prevent an earthshaking catastrophe."The final two specials, which have not yet been dated, are titled Wizard City and Together Again. The former features Peppermint Butler "starting over at the beginning, as just another inexperienced Wizard School student"; the latter "brings Finn and Jake together again, to rediscover their brotherly bond and embark on the most important adventure of their lives."

See IGN's picks for the 25 best adult cartoon series in the video below.

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Everything Coming to HBO Max 57 IMAGES

The original Cartoon Network series ended on a high note, with IGN scoring the finale a 10 in its Adventure Time series finale review . Reviewer Daniel Schindel said the episode serves as "a thrilling exclamation point, an intriguing question mark, and a poignant, quiet period all at once."HBO Max will launch in Spring 2020. For more on the streaming service, check out everything coming to HBO Max

Jordan is a freelance writer for IGN. Follow him on Twitter