Activision's "Call of Duty: Modern Warfare 2" was the best-selling game of 2009, and the company is quickly following that title up with "Call of Duty: Black Ops," which comes out on November 9. "Black Ops" developer Treyarch released the very first footage of the game's multiplayer mode in a new trailer.

The trailer, [video id="549695"]which you can watch right here[/video], introduces brand-new gameplay elements to the "Call of Duty" franchise, including weapons, gadgets and abilities. The basics, however, seem to stay close to "Modern Warfare 2," with kill-streak rewards and player-customized callsigns returning.

Video Cameras, Ballistic Knives and More

For the first time in a "Call of Duty" game, "Black Ops" will allow players to place cameras in the map as a means of surveillance.

Placing a camera at a flag point, for example, will allow you and your team to see if anyone is moving in on that position. The camera's point of view shows up as a picture-in-picture on the game screen, allowing players to continue normal actions while keeping watch on an important target.

Another new addition is the ballistic knife, which can be fired at a nearby target for an easy, silent kill. Less subtle is the new crossbow, which comes loaded with exploding darts that make a mess of anything that happens to stumble into the player's crosshairs.

Two new kill-streak rewards were also on display in the latest trailer. The guided rocket is similar to the UAV rocket from "Modern Warfare 2," but it flies at a much lower trajectory, giving players more time to choose their targets. The remote control car is another new kill-streak reward, letting players drive a foot-high buggy loaded with explosives into unsuspecting enemy bases.

Replay Editor

It only gets a brief nod toward end of the new trailer, the news that "Call of Duty: Black Ops" will include a replay editor is a big deal. The ability to rewatch and edit previously played matches will undoubtedly be a hit on video-sharing sites, where gameplay videos of top "Modern Warfare 2" performances flourished.

No details yet on how gameplay videos will be shared, but here's hoping that some ability to export the videos directly to the Web will be included in the system.

"Call of Duty: Black Ops" has a lot to live up to after the success of "Modern Warfare 2," but based on this first trailer, it seems like fans of last year's game will feel right at home.

For more on "Call of Duty: Black Ops," check out MTV Multiplayer.