Há muito pouco por aí sobre este antigo jogo. No entanto, esta discussão pode sugerir algumas semelhanças:
My memory about the specifics of the system are pretty vague, but I remember once having memorized the action/results/whatever chart on the back of the rulebook. It was color coded and pretty simple, as I recall, and damage wasn't hit points but some sort of descriptive thing where you could take so many "bruises" before being knocked out and so many "wounds" before dying. This and Marvel Super Heroes would lead me to be confused by systems where you couldn't knock anybody out; just outright kill 'em (and that's most systems in existence at the time, by my reckoning). I never associated it with Top Secret S.I., but now that I think about it, it definitely had a similar if not identical percentile based resolution system for combat and skills.