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  2. Half-Life 2 - Wikipedia

    en.wikipedia.org/wiki/Half-Life_2

    Half-Life 2. Half-Life 2 is a 2004 first-person shooter (FPS) game developed and published by Valve Corporation. It was published for Windows on Valve's digital distribution service, Steam. Like the original Half-Life (1998), Half-Life 2 combines shooting, puzzles, and storytelling, and adds new features such as vehicles and physics-based gameplay.

  3. Half-Life 2: Deathmatch - Wikipedia

    en.wikipedia.org/wiki/Half-Life_2:_Deathmatch

    Genre (s) First-person shooter. Mode (s) Multiplayer. Half-Life 2: Deathmatch is a multiplayer first-person shooter video game developed by Valve. Released on Steam on November 30, 2004, it uses many of the assets from Half-Life 2 and its Source engine. It features new levels, optimized for multiplayer arena play, and a few new weapons.

  4. Half-Life 2: Lost Coast - Wikipedia

    en.wikipedia.org/wiki/Half-Life_2:_Lost_Coast

    Half-Life 2: Lost Coast is an additional level for the 2004 first-person shooter game Half-Life 2. Developed by Valve, it was released on October 27, 2005, through the Steam content delivery service as a free download to owners of the Windows version of Half-Life 2. Players control the Half-Life protagonist Gordon Freeman as he travels up a ...

  5. Half-Life (series) - Wikipedia

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

    March 23, 2020. Half-Life is a series of first-person shooter (FPS) games created by Valve. The games combine shooting combat, puzzles and storytelling. The original Half-Life, Valve's first product, was released in 1998 for Windows to critical and commercial success. Players control Gordon Freeman, a scientist who must survive an alien ...

  6. Thermonuclear weapon - Wikipedia

    en.wikipedia.org/wiki/Thermonuclear_weapon

    The fission products of this chain reaction heat the highly compressed (and thus super dense) thermonuclear fuel surrounding the spark plug to around 300 million kelvin, igniting fusion reactions between fusion fuel nuclei. In modern weapons fueled by lithium deuteride, the fissioning plutonium spark plug also emits free neutrons that collide ...

  7. Half-Life 2: Episode Two - Wikipedia

    en.wikipedia.org/wiki/Half-Life_2:_Episode_Two

    Half-Life 2: Episode Two is a 2007 first-person shooter game developed and published by Valve. Following Episode One (2006), it is the second of two shorter episodic games that continue the story of Half-Life 2 (2004). Players control Gordon Freeman, who travels through the mountains surrounding City 17 to a resistance base with his ally Alyx ...

  8. Plutonium - Wikipedia

    en.wikipedia.org/wiki/Plutonium

    Plutonium is a chemical element; it has symbol Pu and atomic number 94. It is a silvery-gray actinide metal that tarnishes when exposed to air, and forms a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation states. It reacts with carbon, halogens, nitrogen, silicon, and hydrogen.

  9. Half-Life 2: Episode Three - Wikipedia

    en.wikipedia.org/wiki/Half-Life_2:_Episode_Three

    Half-Life 2: Episode Three. Half-Life 2: Episode Three is a canceled first-person shooter game developed by Valve. It was planned as the last in a trilogy of episodic games continuing the story of Half-Life 2 (2004). Valve announced Episode Three in May 2006, with a release planned for 2007. Following the cliffhanger ending of Episode Two (2007 ...