Starcraft uses a 2D representation of an isometric view. It does not use a true Isometric view as the tiles are rectangular instead of 'diamond' shaped.

Once I found this out I started working on a similar method of drawing an isometric view. Run-A-War also has this view.

A rectangular shaped tile has a number of advantages
:arrow: easier to code
:arrow: easier to build collision maps
:arrow: easier to work out a z order system that works effectivly