Because of @vintagerpg, I'm checking out old Different Worlds magazines tonight while watching Elite 8 games with my father-in-law. Remember the days when there were multiple print #TTRPG magazines?
One of the more interesting things I found while looking through those Different Worlds issues last night were the issues devoted to Marvel and DC superheroes using rulesets that pre-date officially licensed games like Marvel Super Heroes and DC Heroes. I'm talking games like Villains & Vigilantes and Champion. I wonder how that licensing worked (if it was officially supported at all)