You see it everywhere you go. People with their heads in their phones playing Candy Crush, or Clash of the Clans, or whatever the latest addictive game is. The fact of the matter is that we humans love to be rewarded for every little thing we do, which triggers our dopamine response
. At the same time, games know how to make you wait for the bigger rewards—so by the time you get that big shiny sword, it feels like you’ve really achieved something important.