Play Farm of Souls game and make people die the happiest deaths possible to harvest the most souls, then use the souls to upgrade others so they may die even happier. In Farm of Souls, drag a soul anywhere to drop a person there. They will begin to construct a stash and farms using the resources laying about. They will give you souls on their death based on how much they accomplished during their life (their level.) You can use these souls to either make more people or upgrade them in this challenging game. People cannot pick up the heavier resources (stone, iron, gold) until higher levels.