Please to tell us more detail about the rules. And very nice looking.
I like Whitehouse's general approach but the rules I have of his, Astounding Tales, that might be a forerunner of these ramble on and around too much for my tastes. Are these 'cleaner' and more focused, assuming you know the earlier rules?
I ask because I have a solid supply of gangsters, vehicles, and buildings to get painted and assembled at some point but need to decide on rules. Don't want too detailed skirmish level rules, just want fun and fast rules that can handle quite a few figures, several dozen at least (though mostly background players [that would be 'extras' to most of you]).
Your photos look good.