Polygamy is the practice of marrying multiple spouses. When a man is married to more than one wife at a time, sociologists call this polygyny. When a woman is married to more than one husband at a time, it is called polyandry. If a marriage includes multiple husbands and wives, it can be called a group marriage or mixed-orientation marriage.
Of the Pixellated games Shakedown: Hawaii is the clear standout with an addictive clicker like economy game hiding among the GTA goodness.