HL-2 (aircraft)
HL-2 may refer to: * ''Half-Life 2'', a computer game by Valve * Medwecki HL 2 The Medwecki HL 2 was a Polish two seat lightplane flown in 1927. Handicapped by a low power, unreliable engine, its flying life lasted little more than a month. Design and development Light aircraft design was slow to start in Poland but fro ...

Half-Life 2
''Half-Life 2'' is a 2004 first-person shooter game developed by Valve. It was published by Valve through its distribution service Steam. Like the original ''Half-Life'' (1998), ''Half-Life 2'' combines shooting, puzzles, and storytelling, and adds features such as vehicles and physics-based gameplay. Players control Gordon Freeman as he joins a resistance movement to liberate the Earth from the control of an alien empire, the Combine. ''Half-Life 2'' was created using Valve's Source engine, which was developed at the same time. Development lasted five years and cost million. Valve's president, Gabe Newell, set his team the goal of redefining the first-person shooter genre. They integrated the Havok physics engine, which simulates real-world physics, to reinforce the player's sense of presence and create new gameplay, and developed the characterization, with more detailed character models and realistic animation. Valve announced ''Half-Life 2'' at E3 2003, with a release date ...
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