Marduk, the creator, is mentioned in the introduction text. He created at least the Mazes of Menace, and probably the entire universe. He plays no part in the game.
First insisting on recognition as supreme commander, Marduk
defeated the Dragon, cut her body in two, and from it created
heaven and earth, peopling the world with human beings who not
unnaturally showed intense gratitude for their lives. The
gods were also properly grateful, invested him with many
titles, and eventually permitted themselves to be embodied in
him, so that he became supreme god, plotting the whole course
of known life from the paths of the planets to the daily
events in the lives of men.