Half-Life 2

Half-Life 2 (stylized as HλLF-LIFE²), the sequel to Half-Life, is a first-person shooter video game and part of the Half-Life series. Developed by Valve Corporation, it was initially released on November 16, 2004, following a protracted five-year, $40 million development cycle, during which a substantial part of the project was leaked and distributed on the Internet.