All upgrades add more.
Make people die the happiest deaths to harvest the most souls, then use the souls to upgrade others so they may die even happier!
Originally done for Game in Ten Days #10, theme: Death.
Hit space to create people. They will begin to construct a stash and towns using the resources laying about. They will give you souls on their death based on their happiness (their level.) You can use these souls to either make more people or upgrade them.
People cannot pick up the heavier resources (stone, iron, silver, gold) until they’re higher levels.