The universe for the Half-Life series of games, including Portal.
Half-Life
Fictional Universe
Characters
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Half-Life
Half-Life is a science fiction first-person shooter video game developed by Valve Software and the company's debut product. First released by Sierra Studios on November 19, 1998, the game was also released for the PlayStation 2 on November 14, 2001. Valve, set up by former Microsoft employees, had...
