An achievement awarded to a player in a single level, song, round, or stage by finishing them without ‘Miss’ or any mistakes, or for getting the highest scores or percentage cleared (usually above 90% or 98%). The term can mean a high rating level of an item or character within the confines of the game (as valuated by the developer), but it is also used by players in tierlists to refer to the top of the video game meta.
