Minecraft is a phenomenon, at least as a game that turns every conventional gameplay tenent on its head. Does it have a story? No, not necessary. Do the developers create the content? At first, but it's mainly user-generated content. Does it have rules and a clear objective? Rarely, apart from finding food, maintaining health, and reaching "The End". Are there bosses or creatures to kill at every turn? Mainly no, but you can kill some enemies for materials. Does it have levels? Not really, it's open-world. Did it sell 4 million units by November 7th? Yes. What IS this trickery?