You apparently never learned the definition of "download", using it as if it's a synonym for "install". Thus, your subject line is already answering itself. No, there is no such thing as a "download" without a network. Having clarified that, I suspect that a hard copy of the Sims 3 that predates the existence of Origin may very well be able to install, the only way to find out, however, is to try, I'd say.
P. S. I see that Crinrict has documented the differences in disk-based versions very thoroughly, in two languages, and she is to be commended for the effort she has invested!
