Half-Life 2 Episode One Released

Valve launches first of an episodic trilogy
Valve today announced that Half-Life 2: Episode One is now available via Steam and in retail stores in North America for $19.95. In Episode One, player reprises his role of Dr. Gordon Freeman, who must immediately face the repercussions of his actions in City 17 and the Citadel. Freeman reconnects with Alyx Vance and her robot, Dog, as they continue their support of the resistance's battle against the Combine forces. Half-Life 2: Episode One doesn't require Half-Life 2 to play and offers four to six hours of gameplay.