IIRC, Hercules cards were more pro-oriented (monochrome graphics, but higher resolution than their contemporaries), so I doubt anyone would bother to make a game port specifically for them.
If you ran the game on a Hercules, most likely it was the CGA version run on top of a CGA simulator [1].
[1] https://dosdays.co.uk/topics/cga_simulators_for_hercules.php