The Half-Life 2: Episode Pack offers both of the new games created by Valve to expand the award winning and best-selling action game franchise of all time. And, as an added bonus, Half-Life 2: Deathmatch is also included for online play.
Half-Life® 2: Episode One returns you, as Dr. Gordon Freeman, to face the immediate repercussions of your actions in City 17 and the Citadel. Rejoin Alyx Vance and her robot, Dog, to once again aid the human resistance in their desperate battle against the totalitarian alien menace of the Combine.
In Episode Two, you must battle and race against Combine forces as you traverse the White Forest to deliver a crucial information packet stolen from the Citadel to an enclave of fellow resistance scientists.
Source: The Publisher Website.