Complex sentence: The first through third games in the "Heroes of Might and Magic" series traces the fortunes of the Ironfists in more detail, though none of the sci-fi elements appear in the "Heroes" series.
Split into simpler sentences: The first through third games in the "Heroes of Might and Magic" series traces the fortunes of the Ironfists in more detail. None of the science fiction elements appear in the "Heroes" series.