What is Volpone's game in the novel, Volpone?

Volpone (also known as The Fox) is an old "magnifico," who is more interested in the game of acquiring money than he is in the real property of money. He leaves no family to inherit his estate, and finds that pretending to leave his estate to his followers has created quite an interesting game. Thus, Volpone pretends to be ill in order to manipulate several men, who think they will become his heirs, and from whom he has acquired many expensive gifts. It can be argued that Volpone has some integrity, since he is not interested in tricking widows and children out of their money, although in truth, Volpone simply considers widows and children too gullible for his interests.