Knights of Valour 2 Plus - Nine Dragons represents an enhanced version of Knights of Valour 2. 'Plus' indicates added content, likely featuring new characters, stages, game modes, or enhanced visuals.  The 'Nine Dragons' subtitle suggests a thematic element incorporated into the game.  VM202XX and VM204XX likely represent different versions or revisions of this Plus iteration.  The exact content changes are not specified by the naming convention itself, only that it is an upgraded version of the base game.

Knights of Valour 2 Plus - Nine Dragons (VM202XX)

Knights of Valour 2 (V103, 101, 100, Hong Kong)