Island of Robots

I've been playing around the idea of a facility on an island. Now, abandoned by man, the island's many factories are maintained by a number of giant robots. Some of the robots have fallen due to lack of maintenance or the islands inhospitable terrain. I turn the remaining active robots have begun to cannibalize their fallen brethren.



The shape and design of the robots would indicate that they were created in the 1950's... But who made them? And where did they Go?