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The first teaser for HBO’s “Westworld” is a mere 30 seconds, but it manages to pack in plenty of weird happenings.

The sci-fi Western, based on Michael Crichton’s 1973 movie of the same name, aired its first footage during the season 2 finale of “True Detective.”

“Have you ever questioned the nature of your reality?” a voiceover asks Evan Rachel Wood’s character Dolores, who seems to be in a dream.

With the series described as “a dark odyssey about the dawn of artificial consciousness and the future of sin,” the film took place in a futuristic theme park in which a malfunction caused robots to wreak havoc on guests. HBO ordered “Westworld” to series last November.

Along with Wood, the cast also includes Anthony Hopkins, Ed Harris, James Marsden, Thandie Newton, Jeffrey Wright, Miranda Otto, Rodrigo Santoro, Shannon Woodward, Ingrid Bolsø Berdal, Angela Sarafyan and Simon Quarterman.

The project hails from J.J. Abrams’ Bad Robot Productions. Jonathan Nolan serves as an executive producer, writer and director on “Westworld,” and Lisa Nolan also writes and exec produces for the show. Abrams, Jerry Weintraub and Bryan Burk executive produce. Athena Wickham will produce, with Susie Ekins co-producing.

“Westworld” will debut on HBO in 2016.