A Burden website is online, revealing plans for an unusual tower defense game in the works at indie developer PixelPickle Games. Burden takes place on the back of a giant mechanical "beast," rambling across a war-torn land, and the plan is to unveil this via Steam Early Access within the next two months. Here's a reveal trailer showing how this works, and here's a description:

Burden is a game of tactical tower defense on multiple simultaneous battlefronts. The player must place shields and artillery towers on the exterior of their colossus whilst also juggling defences on multiple nodes - critical locations on the beast which enemies will attempt to board and penetrate.

Mhoroa, a civilisation built on the exploitation of an ancient resource, finds itself facing extinction as the land tears itself apart . A handful engineers follow a message in their dreams and discover the Colossi - giant beast-like machines built by their ancestors and thought to be a myth. Taking these beasts to annointed locations will save the land, but their fellow countrymen react in fear and take up arms to kill the colossi. Now they must fight through their own people in order to save them.

The game is broken into chapters, each of which is an epic journey on a different colossus. Within each chapter the player will face major foes blocking their progress across the land and many waves of enemies boarding the beast. Success depends on smart strategy and quick management of the battle as it unfolds on multiple fronts.