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  2. The Orange Box - Wikipedia

    en.wikipedia.org/wiki/The_Orange_Box

    The Orange Box is a video game compilation containing five games developed and published by Valve.Two of the games included, Half-Life 2 and its first stand-alone expansion, Episode One; had previously been released in 2004 and 2006 as separate products.

  3. 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.

  4. Half-Life (series) - Wikipedia

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

    In December 2008, Valve announced that the two main Half-Life games had sold 15.8 million units in retail (9.3m for the first, 6.5m for the second), while the Half-Life expansions [85] had sold 1.9 million (Opposing Force: 1.1 million, Blue Shift: 800,000) and Half-Life 2 expansions 1.4 million units (all for Episode One) by the end of November ...

  5. Product activation - Wikipedia

    en.wikipedia.org/wiki/Product_activation

    A product key is required to proceed and use Windows 95. In one form, product activation refers to a method invented by Ric Richardson and patented (U.S. patent 5,490,216) by Uniloc where a software application hashes hardware serial numbers and an ID number specific to the product's license (a product key) to

  6. List of Compact Disc and DVD copy protection schemes

    en.wikipedia.org/wiki/List_of_Compact_Disc_and...

    CD-Cops Requires the user to enter CD-code (or reads embedded CD-code) that describes geometry of CD to correctly locate data on the disc. SafeDisc (versions 1–5) Adds unique digital signature at the time of manufacturing which is designed to be difficult to copy or transfer so that software is able to detect copied media. SafeCast

  7. Valve Corporation - Wikipedia

    en.wikipedia.org/wiki/Valve_Corporation

    Valve Corporation, also known as Valve Software, is an American video game developer, publisher, and digital distribution company headquartered in Bellevue, Washington.It is the developer of the software distribution platform Steam and the game franchises Half-Life, Counter-Strike, Portal, Day of Defeat, Team Fortress, Left 4 Dead and Dota.

  8. Product key - Wikipedia

    en.wikipedia.org/wiki/Product_key

    Product key on a Proof of License Certificate of Authenticity for Windows Vista Home Premium. A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters.

  9. Unreleased Half-Life games - Wikipedia

    en.wikipedia.org/wiki/Unreleased_Half-Life_games

    On November 23, 1999, GameSpot reported that 2015, Inc. was developing a Half-Life expansion pack to follow Half-Life: Opposing Force. 2015, Inc declined to comment. [1] On March 18, 2000, the Adrenaline Vault reported that the new expansion was named Half-Life: Hostile Takeover, and that it had appeared on retail product lists with a release date of late August. [2]