(CNN) -- A new teaser trailer for "Call of Duty: Black Ops 2" reveals important details about the setting and gameplay options for the latest title in the blockbuster "Call of Duty" series.
The clip was posted online Tuesday night and has already attracted 1.4 million views on YouTube. It features a near-future scenario in which the U.S. military has developed technology that puts unmanned vehicles and robots on the front lines of battle. An enemy gains access to that technology and turns it against cities all over the world.
Developed by Treyarch and published by Activision, "Call of Duty: Black Ops 2" will be released November 18. Its predecessor, 2010's "Call of Duty: Black Ops," is the best-selling video game ever in the United States, according to some estimates.
Mark Lamia, Treyarch studio head, said his developers did a lot of research to set the game in a plausible future. He said for its single-player campaign, the game will feature multiple plotlines and nonlinear gameplay in which a player's actions affect how the story unfolds.
Gameplay in the video shows a bombed-out Los Angeles, urban combat through city streets and ... horseback chases through the desert. It appears to mix futuristic, sci-fi themes with present-day elements.
Lamia also confirmed that zombies are returning to the game. "Our biggest, most ambitious zombies ever," he said.
He would not reveal anything about the game's multiplayer action. Lamia said more information on that will be released later.
The futuristic tone of the game seemed to polarize fans on the Internet. Some joked about whether Treyarch was making Anonymous, the real-life hacker group dedicated to promoting free flow of information, the game's main villain.
Twitter user @killyourfm said, "You know what? I'm BURNT OUT on shooters, especially Call of Duty. But that trailer got me very interested. Futuristic toys. Horses. Cool."
However, "Call of Duty Elite" forum user Oneqwkford laments, "This looks stupid! If I wanted to play a Si-fi game I would play Gears of War or Halo! I always get Very excited for a new CoD game but this one looks very Disappointing. I will not be buying this one!"
Many other gamers said they were waiting for more details on "Black Ops 2's" multiplayer action before making a decision about purchasing the game.