Action-Heroes is the culmination of years of work in developing this system. I was running it at conventions in the Before Times, and I incorporated the feedback that I received into what has become the final text.
When I started up my game development Patreon during the early days of the pandemic, I started reworking the text into a game that I wanted to play (really, not making me all that much different from the many other game designers out there). I have posted some new material that I am developing for future releases for Action-Heroes as well.
In my background as a gamer, I have leaned heavily on "generic" games that can be used to realize a multitude of settings and character types, and this carried through into Action-Heroes. I took the lessons that I learned during years of running games like GURPS, Champions/Hero System, Heroes Unlimited, and the big gold book of Basic Roleplaying and combined them with evolving game design ideas and made them into something that I could run without things breaking down at the table.