Technology is a tool. It helps us accomplish amazing things, hopefully more quickly and more easily and more amazingly than if we hadn't used the tool. Before we had newfangled steam-powered hammering machines, we had hammers. And before we had hammers, we had the painful process of smacking a nail into a board with our bare hands. Technology is all about making our lives better and easier. And less painful.
Unity 3D is a new piece of technology that strives to make life better and easier for game developers. Unity is a game engine or a game authoring tool that enables creative folks like you to build video games.
By using Unity, you can build video games more quickly and easily than ever before. In the past, building games required an enormous stack of punch cards, a computer that filled a whole room, and a burnt sacrificial offering to an ancient god named Fortran. Today, instead of spanking nails into boards with your palm, you have Unity. Consider it your hammer a new piece of technology for your creative tool belt.