overgeeked
Open-World Sandbox
Independently invented role-playing (i.e. cops and robbers or similar), perhaps. But I’m not sure about RPGs per se. The systems and mechanics part seems to be new with Wesely.I'm pretty sure every child independently invented RPGs, going back to before recorded history.
My brother and I created a complicated wargame with action figures, complete with damage charts and ranges (measured with plastic rulers) before we'd ever encountered a wargame.
No one "invented" RPGs. These precursors are often interesting, but they are just people who publicized and systemized a concept that's extremely old and incredibly common.