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  2. Black Mesa Research Facility - Wikipedia

    en.wikipedia.org/wiki/Black_Mesa_Research_Facility

    The Black Mesa Research Facility (also simply called Black Mesa) is a fictional underground laboratory complex that serves as the primary setting for the video game Half-Life and its expansions, as well as its unofficial remake, Black Mesa. It also features in the wider Half-Life universe, including the Portal series.

  3. Half-life - Wikipedia

    en.wikipedia.org/wiki/Half-life

    In this situation it is generally uncommon to talk about half-life in the first place, but sometimes people will describe the decay in terms of its "first half-life", "second half-life", etc., where the first half-life is defined as the time required for decay from the initial value to 50%, the second half-life is from 50% to 25%, and so on.

  4. Half-Life (series) - Wikipedia

    en.wikipedia.org/wiki/Half-Life_(series)

    The developer of the Half-Life series, Valve, was founded in 1996 in Kirkland, Washington by the former Microsoft employees Mike Harrington and Gabe Newell. Valve began working on the first Half-Life soon after formation, and settled on a concept for a horror-themed 3D action game, using the Quake engine as licensed by id Software.

  5. Half-Life (video game) - Wikipedia

    en.wikipedia.org/wiki/Half-Life_(video_game)

    Half-Life is a first-person shooter that requires the player to perform combat tasks and puzzle solving to advance through the game. Unlike most first-person shooters at the time, which relied on cut-scene intermissions to detail their plotlines, Half-Life ' s story is told mostly using scripted sequences (bar one short cutscene), keeping the player in control of the first-person viewpoint.

  6. List of radioactive nuclides by half-life - Wikipedia

    en.wikipedia.org/wiki/List_of_radioactive...

    Radioactive isotope table "lists ALL radioactive nuclei with a half-life greater than 1000 years", incorporated in the list above. The NUBASE2020 evaluation of nuclear physics properties F.G. Kondev et al. 2021 Chinese Phys. C 45 030001. The PDF of this article lists the half-lives of all known radioactives nuclides.

  7. Combine (Half-Life) - Wikipedia

    en.wikipedia.org/wiki/Combine_(Half-Life)

    Depiction of the Combine's Civil Protection. Certain elements of the Combine's appearance, such as that of the Advisors, are inspired by the works of Frank Herbert. [1] The towering Striders seen throughout Half-Life 2 and its subsequent episodes are based directly on the Martian tripods of the H. G. Wells novel The War of the Worlds, where Martians invade Victorian England, using the tripods ...

  8. Gordon Freeman - Wikipedia

    en.wikipedia.org/wiki/Gordon_Freeman

    In the Half-Life saga, Gordon Freeman is a silent protagonist who, despite lacking formal weapon training, survives a chaotic inter-dimensional incident at the Black Mesa Research Facility. In Half-Life 2, after being kept in stasis for nearly two decades, Freeman battles the Combine Empire to liberate Earth. He gains legendary status and ...

  9. Half-Life: Opposing Force - Wikipedia

    en.wikipedia.org/wiki/Half-Life:_Opposing_Force

    As an expansion pack for Half-Life, Opposing Force is a first-person shooter. The overall gameplay of Opposing Force does not significantly differ from that of Half-Life. Players navigate through levels, fight hostile non-player characters and solve a variety of puzzles to advance. [2] The game continues Half-Life ' s