Early reviews for HBO's upcoming Watchmen series have started to surface online, and it appears critics are largely enthralled with how the show builds off of what came before it.

Watchmen is based on Alan Moore and Dave Gibbons' comic of the same name. However, HBO's series is a sequel, taking place after the events of that series and will focus on several new characters, as well as returning ones.

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Below, you'll find a sample of what critics are saying about the series so far:

Chris Evangelista, Slashfilm: "Lindelof and his team have done the impossible - they've captured the superhero deconstruction elements that stood out in Moore and Gibbons' work while also expanding on their world-building."

Keith Phipps, TV Guide"The book gives anyone attempting to follow it up a richly realized world on which to build, but it's the ways in which this new series diverges from the source material that makes it so compelling."

Kristen Baldwin, Entertainment Weekly: "The show is expensive-looking but not hollow. There's a humanity to the characters that is often lacking in comic book adaptations, due in large part to the exceptional cast, including Regina King, Jeremy Irons, and Don Johnson."

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Developed by Damon Lindelof, HBO's Watchmen stars Jeremy Irons, Regina King, Don Johnson, Tim Blake Nelson, Louis Gossett Jr., Yahya Abdul-Mateen II, Tom Mison, James Wolk, Adelaide Clemens, Andrew Howard, Frances Fisher, Jacob Ming-Trent, Sara Vickers, Dylan Schombing, Lily Rose Smith and Adelynn Spoon. The series premieres Oct. 20.