Mace, Minecraft City Builder. This downloadable tool lets you generate a city at your spawn point. (Yes, it’s a tool, so you don’t have to mod your game in order for it to work. Perfect for the mod-o-phobe and the somewhat hypocritical vanilla purist alike!) No more entering empty Minecraft worlds with a sense of pointless desolation! With Mace, your world begins with a city, a city you can defend or destroy depending on your personal inclination.