Minecraft wiki entry for Building_a_metropolis, associated text: Building Contest Hold a contest where the players build structures. The structures can be pretty much anything, ranging from houses and flying machines to pixel art. Include various prizes, such as rare blocks, and make sure to have a few judges. (At least two are recommended). After it's over, winners' entries stay up (and, if you have WorldEdit or structure blocks, you can even move them somewhere else), while the losers' entries can be taken down. If you need to build an important building, like city hall or central railway station, you can host a design competition where the winning design gets built or is moved to the right place with WorldEdit or structure blocks.