Learn to separate a casino game’s theme, format, and features before you play....

https://romeo-wiki.win/index.php/Why_Casino_Operators_List_Categories_Like_Slots_and_Live_Casino_Separately

Learn to separate a casino game’s theme, format, and features before you play. The theme sets the story, the format explains how wins work, and features add special mechanics. For example, cascading reels describe a feature, not a theme or format