Editing Nine Circles Levels (section)

===Level structure===
*'''The wave game-mode must be active for greater than 25% of a star-rated level for it to be considered a Nine Circles level:''' Wave gameplay is central to Nine Circles levels. The average wave usage in rated levels is 50.5%, but the 25% threshold ensures creative flexibility. This threshold derives from psychological studies indicating that humans recognise prominence when an element ranks among the 'Top 3' in a category (e.g., Olympic podium rankings). Thus, the wave must occupy at least 25% of gameplay to qualify as a 'Top 3' game-mode.
<small>Refer to the [https://docs.google.com/spreadsheets/d/1eUMKrM3ujw4UWfGpluFNJFaNPxQkJxUY-b43QoEEtvA Nine Circles Wave Quantity Data] for statistical breakdowns.</small>
*'''The level must not begin with the wave game-mode:''' All rated Nine Circles Demons feature a non-wave introduction, typically synced to a musical buildup preceding the drop. Analysis confirms that no rated Nine Circles Demon begins with wave gameplay. However, the closest level to being a Nine Circles Demon that starts with wave is [[Ashley Wave Trials]]. According to moderators in the Nine Circles Demon List, the start-with-wave criteria is non-negotiable, and if it starts with the wave, it will never be on the Nine Circles Demon List.