As a kid a pass so many hours playing with my LEGO blocks. So when I heard that there is a software from LEGO called «LEGO Digital Designer» that allow me to play with my favorites blocks on my computer I was thrill.
You work in 3D, you can share your creations with friends you can even order real blocks to make your model in the real world. It's fantastic !
Dowload : ldd.lego.com/download
LEGO FACTORY (where you share your models) : us.factory.lego.com