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Half-Life
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The titles of Half-Life and its expansion packs are all named after scientific terms. Half-Life itself is a reference to the half-life of a quantity (such as a radioactive material), the amount of time required for the quantity to decay to half of its initial value. The Greek letter lambda, which features prominently on the game's packaging, represents the related decay constant, as well as the Lambda Complex featured in the game. Opposing Force, while it could be named because the player assumes the role of one of the enemies in the original game, is ... a reference to Newton's third law of motion, while Blue Shift refers to the blue shifting of the frequency of radiation caused by the Doppler effect, in a similar parallel reference to the blue color of the security uniforms. Finally, in Half-Life: Decay, the title again references the half-life equation with the Lambda symbol being the decay constant.
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Half-Life 2: Episode One is the first of a trilogy[1] of expansion packs/episodes for the 2004 first-person shooter game, Half-Life 2. The episode takes place immediately after the end of Half-Life 2, in and around 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; while a continuation of Half-Life 2, it does not require the original game to be installed or registered to a user's Steam account to play. It takes advantage of several major upgrades to the Source engine since the release of Half-Life 2, primarily its high dynamic range rendering capabilities and the upgraded facial animation system.
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Half-Life 2 isn't just about running around shooting though, instead the game has a deep storyline behind it, once again written by Marc Laidlaw. Sometimes the action will take a step-back and you'll be required to part-take in a puzzle or other task, or just sit back and listen to some dialogue. There is a massive story leading you through the game and there are no cut scenes meaning you play every second immersing yourself completely in the story. The aim is to make you think 'you are Gordon Freeman'.
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Half-Life has a large array of weapons the player can use. The iconic weapon of the game is the trademark crowbar which can be used for mêlée fighting as well as a tool for clearing obstructions and prying off vents. The game ... features numerous conventional weapons, such as the Glock 17 pistol, SPAS-12 shotgun, MP5 submachine gun with grenade launcher, a .357 Magnum revolver, and rocket launcher as well as abnormal weapons ranging from a crossbow to alien weapons such as Snarks. Two experimental weapons, the tau cannon and the gluon gun, are built by the scientists in the facility and are acquired by the player late in the game.
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Following the events of Half-Life 2, Episode One starts out with Gordon experiencing some kind of vision that lets him review the explosion of the Citadel's Dark Fusion Reactor. As time stops, several purple glowing Vortigaunts appear and rescue Alyx Vance. The G-Man is then seen walking through the door made of light toward Gordon Freeman. As he opens his mouth to say something, he is distracted by blue lights and is separated from Gordon by another group of Vortigaunts. Several of them surround the G-Man and block him off from Gordon with a blue energy shield. He straightens his tie and looks at Gordon while saying in an irritated tone: "We'll see...about that."
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Black Mesa (formerly Black Mesa: Source) is a Half-Life 2 total conversion remaking VALVe Software’s award-winning PC game, Half-Life. Utilizing the Source engine, Black Mesa will reintroduce the player as Doctor Gordon Freeman, along with the original cast of memorable characters and environments seen in Half-Life. Black Mesa was built and founded on the basis that Half-Life: Source was inadequate as the Source engine port of Half-Life, regardless of the intentions of VALVe Software. As such, Black Mesa was founded to fully reconstruct the Half-Life universe utilizing Source to its fullest potential in terms of art detail, level sizes and code features. This total conversion will not require Half-Life: Source to play - only legitimate copies of Half-Life 2 and Counter-Strike: Source on Steam.
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