Earth Assault is a game that delivers on its promise but at the same lacks the definition and completeness that derives this game from being a truly great game.
For a statergy game UAW falls behind by allowing a very limited number of units to be present at a given time. A total pop cap of 90 is just not enough. As far as graphics are concerned the game looks pretty good. But you really cant enjoy the view because the camera cant be pulled back enough. The disadvantage of the camera is evident as you constantly have to use the mini map in order to manage your base properly.
The unique game play of each faction is definitely a good point. Each faction collects resources and manages its base in a totally different manner.
You will also notice that for some reason reaching is not available in the 1st 2 campaigns. And it appears that this limitation only applies to the player and not the opposition AI which was a bit of a let off.
The game also lacks good flying units with each faction having only one or at most two basic units. But the game makes up for it by providing a good choice of ground units.
All in all Universe at war will provide you with a good entertainment but dont expect it to blow your mind off.