Keanu Reeves appears in a highly anticipated upcoming video game named "Cyberpunk 2077."

Reeves announced as much by appearing on stage at Microsoft's annual Xbox press conference in Los Angeles on Sunday.

Fans in attendance freaked out, and the reaction online was even stronger — there is a lot of love for Reeves among video-game fans, at least partially because of his starring roles in "The Matrix" and, more recently, "John Wick."

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LOS ANGELES — "Wake the f--- up, Samurai," Keanu Reeves' digital likeness says in the upcoming game "Cyberpunk 2077."

"We have a city to burn."

As the reveal trailer ended with his digital likeness, Reeves emerged from backstage through a cloud of smoke and blinding white light:

Reeves emerges. Microsoft

And the crowd went wild.

Reeves is clearly a major Hollywood star, but his reception at Microsoft's Xbox press conference on Sunday was more akin to a Comic Con fan reaction. And Reeves fully embraced it, even taking a moment to growl the word "cyberpunk" to a highly receptive audience.

"He was surprised, too," Phil Spencer, Xbox's head, told me in an interview after the briefing.

"I was talking to him back here — his green room is right next door. And I was saying 'It's not like a movie awards show or something. You're gonna come out, and the fans are likely to jump out of their skin.' And he was like 'OK.' But when he came back down he was like 'Wow!'" Spencer said.

One excited attendee shouted, "You're breathtaking!" as Reeves finished a sentence with the same word. Reeves was taken aback and laughed before yelling back, "You're breathtaking! You're all breathtaking!"

That attendee was later gifted a free collector's edition of the game from its developers.

It was quite a scene, and the reaction online has been similarly strong.

—Anxious lil shit (@hyperlilshit) June 10, 2019

"Cyberpunk 2077" is an open-world action game coming to Xbox One, PlayStation 4, and PC on April 16, 2020. And yes: Reeves plays a character in it.

The entire clip is worth watching, whether you're interested in the game or not. Check it out right here: