It seems to me that even if a person knows nothing about the world of computer games, he knows what these cubes are. Minecraft is a breakthrough game that spawned a bunch of fakes and, quite deservedly, is still alive at the moment. Yes, this is a sandbox, yes, there is no plot in it, there is only a bunch of content with which you can interact as you see fit. Of course, the game has an ending, but still we understand that it is rather for show. Few people play Minecraft with the goal of completing it, but many play in order to build their own cozy house, go to the mine, go to Hell, make their own garden and other things that we all did for long and hard hours in this beautiful and great game.