Though it wasn't innovative when it was first released it was still one hell of a game.
Until castles are made, both sides are pretty much the same. Footman and Grunts are interchangeable. The gameplay was also kinda simple and is based purely on rush.
Beyond that, this game is really good and highly addictive, had a great story, and the gimmick of being able to fight on land, sea, and air worked well enough. This game expanded upon the first Warcraft (Dunecraft to be exact) but did everything better, but didn't do too much new.
For when it was released, this game looked really good, compared to the competition: Command and Conquer.
The sound needs no elaborating, just get a peon and click on it.
This game deserves a spot in everyone's game collection.