Half-Life 2: Episode One

Half-Life 2: Episode One is the first episode that continues the story of Half-Life 2. It takes place immediately after the end of Half-Life 2, in the war-torn setting of City 17. The player is forced to deal with the effects of their actions during the main game. The episode is a stand-alone game, so it does not require Half-Life 2 to be installed or registered to a Steam account to play. You play Gordon Freeman again, and Alyx Vance fights beside you throughout. The Citadel is about to be destroyed, and the two of them have to get out of City 17 before it goes. The game starts in the ruins around the Citadel and moves through the city, where you fight Combine soldiers and other enemies, including zombies. Alyx works as an AI partner in combat, and you work together to get through areas. The game uses the Gravity Gun, which picks up and throws objects. Episode One also includes two multiplayer games and ships with the Source SDK and developer commentary.