This page details one or more prototype versions of Heavy Shreddin'.
This prototype is documented on Hidden Palace.
A prototype of Heavy Shreddin was dumped by AtariAge user johnsodu on July 2, 2022.
The copyright info is included on the title screen, rather than on a separate screen. Notably, the prototype mentions Absolute Entertainment, suggesting it was the original intended publisher.
The order of the first two events was swapped.