On March 28, 2011, a man who calls himself Kurt J. Mac loaded a new game of Minecraft. As the landscape filled in around his character, Mac surveyed the blocky, pixellated trees, the cloud-draped mountains, and the waddling sheep. Then he started walking. His goal for the day was simple: to reach the end of the universe. Nearly three years later, Mac, who is now thirty-one, is still walking. He has trekked more than seven hundred virtual kilometres in a hundred and eighty hours. At his current pace, Mac will not reach the edge of the world, which is now nearly twelve thousand kilometres away, for another twenty-two years.
A Journey to the End of the World (of Minecraft) : The New Yorker
Another one to file under humans-doing–extraordinary-things-with-game-glitches.