Treyarch revealed first details about Call of Duty: Black Ops 3's zombies mode at San Diego Comic-Con today, announcing the new cooperative multiplayer mode titled "Shadows of Evil."

Unlike the single-player campaign, which is set in the future, Black Ops 3's zombies mode will be set in the 1940s, Treyarch said, and will feature era-appropriate weapons, like vintage machine guns. But it will also feature more fantastic weapons, like a rocket-powered riot shield, according to a trailer shown at Comic-Con.

Players will shoot down hordes of '40s era zombies and massive mutant creatures, like a three-headed, tentacled beast. Players will be able to purchase upgrades in the mode, from what appears to be a Pack-A-Punch gumball machine that doles out special abilities.

The zombies mode cast will feature the voice acting talents of Jeff Goldbum, Heather Graham, Neil McDonough, Ron Perlman, playing a magician, femme-fatale, cop and boxer, respectively, as well as Robert Picardo, as a character named The Shadow Man. Picardo, who has appeared in previous Call of Duty games, said the rest of the cast plays "flawed characters," all of which have a secret.

"Shadow Man offers to help them, but his offer may not really help them," Picardo said, calling his role in the game ambiguous and dark. "Everything I say is completely unreliable, including what I just said."

Treyarch is remaking one of its previous zombies maps, Der Riese, for Black Ops 3. The updated map will be called The Giant, though it sounds like the map is being released as a bonus map tied to limited editions and as a GameStop exclusive. Voice actors Fred Tatasciore, Tom Kane, Steve Blum and Nolan North will reprise their roles for The Giant.

Call of Duty: Black Ops 3 is coming to PlayStation 4, Xbox One and Windows PC on Nov. 6. PlayStation 3 and Xbox 360 versions of Black Ops 3 are also in development.