Although the Amiga Action review referred to it as a sequel to Mirrorsoft's BATTLEMASTER, SIEGEMASTER is an unrelated game. In a 2010 interview with Amiga Games that Weren't (aGTW), coder Edward Grabowski had this to say about AA's false presumption:
'There is probably some confusion in that the game I was involved in, apart from being in a similar genre, was nothing to do with Battlemaster - I think a reviewer of an early version called it a "follow-up" so perhaps that's where the sequel idea came from.' [Source: Edward Grabowski, interview with aGTW].
 More info. about SIEGEMASTER can be found HERE [Source: aGTW].