We've seen a lot of amazing things in the world of Minecraft, from unbelievably intricate recreations of Game of Thrones to working 16-bit computers. You could event 3-D print things you made in Minecraft. But now it's gone a step further: You can 3-D print things inside the game. (Sort of.) The video above, made by YouTube user ItsJustJumby, starts out in the control room for the "3-D printer," which uses a functioning control panel to design objects within a 6x9x10 grid and then assembles them nearby. Watch, in awe (or confusion, if you don't play Minecraft), as the video explains how it works.