Minecraft wiki entry for Creating_shapes, associated text: To make a pyramid, first make a square and build a pillar in the middle to denote the height. Then start at the midpoint of one of the sides and build up by a number of blocks, and after every set of those blocks go in by one or two blocks and repeat until hitting the top. Then repeat on all 4 sides. Then, starting from the top, connect the 4 sides of each level of the pyramid with a square ring. Progress downward, each square bigger than the last, until hitting the bottom. For an even better pyramid, use stairs or slabs to smooth the angle. For a steeper pyramid, use a steeper angle, and vice versa.