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   List of Half-Life universe characters

   This is a list of characters in the fictional Half-Life universe, which comprises Half-Life, Half-Life 2, their respective expansion packs, episodes, and Portal.
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   Half-Life (video game)

   Entitled Uplink, the demonstration featured many of the weapons and non-player characters in Half-Life. ... The add-on featured cooperative gameplay in which two players could solve puzzles or fight against the many foes in the Half-Life universe.
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   Half-Life 2

   The fates of many of the major characters, such as Alyx, Eli, and Judith, go unexplained. ... Some mods take place in the Half-Life universe; others in completely original settings; while some are tributes to other games, such as GoldenEye: Source, a recreation of GoldenEye 007, and Resident Evil: Twilight, based on the Resident Evil series.
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   Combine (Half-Life)

   In addition to their role within the Half-Life series, the Combine have been adapted for machinima productions and one synthetic enemy character of the Combine has been made into a plush toy by Valve. ... They can tunnel through from their universe, but once they're here, they're dependent on local transportation.”
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   List of creatures in the Half-Life series

   The following is a list of creatures from the Half-Life universe. ... The player character, Adrian Shephard, is sent down to the portal by a Black Mesa security guard, who remarks "Some of your buddies went down earlier, and I haven't seen 'em since."
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   Half-Life (series)

   Some games feature other controllable characters. ... A new single-player game, it is set in the Half-Life universe.
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   G-Man (Half-Life)

   The character is also referred to as "Gman" in the voice actor list in the credits of Half-Life 2. ... The G-Man seems to be able to take people into "parallel universe"-like areas.
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   Vortigaunt

   The exact nature of the Vortessence is left unclear, although it is revealed that Vortigaunts believe the Vortessence is the fabric of the universe and connects everything. ... The change of the Vortigaunts from enemy characters to allied characters in Half-Life 2 was described as "intriguing" by reviewers, with PC Zone stating that the Vortigaunts were one of the most interesting new characters in the game, playing a role "somewhere between Yoda and ET".
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   Half-Life: Decay

   In this case, the player can only control one character at a time, and can switch between the two characters quickly. ... ↑ "Half-Life Credits". allgame.
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    Half-Life 2: Episode One

    The engine received substantial upgrades since the release of Half-Life 2; the artificial intelligence was improved, and computer-controlled characters were given the ability to comment on objects the player manipulated and obstacles they overcame. ... GameSpy ranked Episode One ninth on its 2006 "Games of the Year" list, and it also noted the implementation of Alyx as a believable and useful companion.

Explore the following pages on Powerset:

• List of Half-Life universe characters,
• Half-Life (video game),
• Half-Life 2,
• Combine (Half-Life),
• List of creatures in the Half-Life series,
• Half-Life (series),
• G-Man (Half-Life),
• Vortigaunt,
• Half-Life: Decay,
• Half-Life 2: Episode One