I think this was possibly the first multi-tiered slot progressive jackpot. I don't remember seeing any before this one. This game features little embedded slot machines, that are miniatures of classic games. The progressives are tied to the top awards of the embedded games. It's really a lot of fun.
The Hot Shot Progressive slot game has been modified and re-released several times as a normal part of product evolution. I am claiming authorship of the original math for Blazing 7s Hot Shot Progressive. I wrote it first. Other people tweaked it.
David Schultz co-designed this game with me. I worked closely with David Schultz on all my good Bally games. I think David Schultz is a very good game designer. He has a lot of very creative ideas.