This final version in the listed set versions of Pang reiterates the significance of understanding that even within the same arcade title, subtle variations occurred based on factors such as hardware revisions or updates to game code. While the core gameplay remains consistent, the set differences might reflect improvements to graphics, sound, or minor gameplay changes.  Without specific documentation or analysis of the different ROM versions, determining the precise differences between each set remains challenging.

Pang (version, set 5)

Pang (version, set 1)