Colossus

Inspired by a scene in H.G. Wells' "the War of the Worlds"...
Panic spreads through the city of London, England, as news of an invasion acts as a virus- unstoppable. As everyone is frantic to find their way out of the major cities, traffic clogs the peirs and airports. Their own rush is the cause of their demise...
The ground rumbles as a dark figure appears over the Thames. Monsterous machines march over the cityscape, foreshadowing destruction. Finally, one of them appears over Big Ben. Not only does he decimate the tower, but his heat rays boil the river and his smoke suffocayes the people below. Mankind is at its knees...
Rendered in Truespace, edited in photoshop.