My interpretation of how the term is used is that the requirement is to have the ability to experience radically different gameplay based on how you play and yo

My interpretation of how the term is used is that the requirement is to have the ability to experience radically different gameplay based on how you play and your choices. For example Undertale goes 100% on "the story evolves around you even if your character essentially is always the same" but also a game that goes "experience tha same story with different mechanics and playstyles" would be an RPG