Imagine a world where everything is made up of squares - or more specifically cubes. You are placed within this world, and are free to do whatever it is you want - build things, farm things, kill things, explore or sit around doing nothing. To make your getting what you need to build things easier you must create tools for yourselves, or make armor to help you stay alive longer. Before long, you find yourself delving into deep monster filled dungeons in search of more and more rare materials like diamonds, so that you can create bigger and better things.