LEGO Digital Designer is a 3D modeling tool that enables you to design and render your own Lego creations. You can get started with a collection of sample models that can be customized and extended, or you can start your creation from scratch using a complete assortment of Lego bricks and your imagination. Simply drag and drop bricks into place and use the provide tool options to build your model. In addition to a 3D render of your design, LEGO Digital Designer can generate the complete set of step-by-step building instructions for your designs in print or HTML format. You can optionally buy the bricks from the LEGO Store and upload your design to the LEGO Factory Gallery. A purchase is not required to use the software, you may use it to work with your existing Lego collection or just for fun.