The map shows the whole world in an equirectangular projection and contains the shapes of all sovereign states' territory as well as antarctica.
The data source is not the CIA Factbook, but Natural Earth. Looks not as vectorish if you zoom in.

For further information about the creation of this map, see the Discussion Page.
Natural Earth - naturalearthdata.com, derived data from Google Fusion Table - http://blog.thematicmapping.org/
Tom Patterson, Nathaniel Vaughn Kelso and others from naturalearthdata.com, Bjørn Sandvik