Minecraft creator and Mojang founder Markus "Notch" Persson tweeted yesterday that the game had reached a milestone of sorts. "Minecraft now has 20 million registered users," he said. "At 70 kg each, that's 25% of the weight of the Great Pyramid of Giza."

We can't help but wonder what the combined weight of every pyramid those 20 million players have built in the game would be.

Are you one of the 20,000,000? What keeps you coming back to Minecraft? Let us know in the comments or on Twitter.