Four hours. This is the amount of time I spent playing Minecraft today. But I had only intended to load up the game to take screenshots for this very article; obviously, that didn’t go as planned. However, I managed to break away, at least long enough to write this article, but I’m already missing it. Why? What makes this game so different than any other? And why would a hardcore gamer like me even bother? Trust me when I say that I never thought a game about blocks, zombies, and building things — with no apparent objective whatsoever — could be so addictive. The concept is simple and the objective…