A video game project is driving a developer insane in the first trailer for Netflix's upcoming "Black Mirror" standalone film, "Black Mirror: Bandersnatch."

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The clip, released Thursday, follows Stefan (Fionn Whitehead), a video game developer in the 1980s who comes up with an idea to develop a game based on an adventure novel titled "Bandersnatch."

As Stefan starts to work on the game, he begins to lose touch with reality and has vivid dreams.

"You're not in control," a woman on a television screen says.

"Black Mirror: Bandersnatch" is set to arrive on Netflix on Dec. 28.

Will Poulter and Asim Chaudhry are also set to star with David Slade directing.

"In 1984, a young programmer begins to question reality as he adapts a sprawling fantasy novel into a video game and soon faces a mind-mangling challenge. Welcome back," reads a synopsis.

The special is not a part of "Black Mirror" Season 5 which is expected to arrive on the streaming service in 2019.

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The anthology series was renewed for a fifth season in March.

Photo credit: Netflix