Empire Earth has all the elements you need in a good strategy game.
Great graphics and sounds, good story lines and a challenge. Although the game seems too difficult at times as the computer opponent sends wave after wave of units which can often slow your progress down to much.
The added element of magic doesn't seem to work as well as it does in other games and the computer uses this to its advantage all too well, turning your empire to nothing more than rubble. Frustrating!
This high difficulty level will be welcome to those up for a good challenge.
You can choose what time period you wish to play in (Roman Empire Age, World War, Future, etc.)
All units are well designed, as is the scenery.
Gameplay is great (besides the magic elements), with many units to choose from including hero units which are becoming more popular in this style of game. (Units with more HP who automatically replenish their own life, and in this particular game, replenish the life of units nearby)
Overall a good game worth your time especially if you enjoy strategy games. Not as good as Age of Empires (an earlier game made by the same people who made this game) but still worth a look.
8/10