This upcoming fully independent animated feature film not only looks great from the trailer, but it might be a great example of a story that starts out in a Steampunk setting but then flows 15 years later to becoming Pulptastic!
The plot :"In 1900, the Earth was attacked by ruthless invaders from the planet Mars. The Martians 80 ft tall, heat-ray spewing, Tripod battle machines laid waste to the planet, but the invaders ultimately fell prey to Earths 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 Mankinds 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 Mankinds very survival under the onslaught of an implacable enemy."