Back in June, we had our first look at the production art for the sci-fi animated film War of the Worlds: Goliath but at the time, there was no actual footage available yet. Well, the official site has just been launched with a trailer and a 12 minute behind the scenes video where the producers talks a bit about the origin and production. It has plenty of cool mecha designs and steampunk machinery. Here's the synopsis:

In 1900, the Earth was attacked by ruthless invaders from the planet Mars. The Martian’s 80 ft tall, heat-ray spewing, Tripod battle machines laid waste to the planet, but the invaders ultimately fell prey to Earth’s tiny bacteria.

Fourteen years later, Man has rebuilt his shattered world, in large part by utilizing captured Martian technology. Equipped with giant, steam-powered Tripod battle machines, the international rapid reaction force, A.R.E.S., is Mankind’s first line of defense against the return of the rapacious Martian invaders. Based in a massive fortress complex at the south end of Manhattan Island, the young warriors of A.R.E.S. train under the leadership of Secretary of War, Theodore Roosevelt, and the grim General Kushnirov.

And return the Martians do. The rematch finds the multinational squad of the A.R.E.S. battle Tripod “Goliath” on the front-lines of a vicious interplanetary offensive when the Martian invaders launch their second invasion using even more advanced alien technology. In the crucible of combat, this young team helming the mighty Goliath will be tested to the limits of their endurance and courage as they fight for Mankind’s very survival under the onslaught of an implacable enemy.

The film is scheduled for release to DVD in early 2010.