Quoted from ForceFlow:Big Foot was probably scrapped at some point because of its unmanageable size. I'm surprised at the number of Hercules pins that have survived.
People may not be aware but Bally sold the intellectual property construction rights of Bigfoot to Atari to make Hercules and converted the game from EM to SS as the novelty game people know today. If you look carefully you will see the similiarities in design, features, size, and assemblies.
Of the two Bigfoots, one was destroyed, one may still exist (in storage the last time I saw it), or owned by someone, and five original plexi backglasses remain I know.