While the game is not "Free-to-Play," Valve occasionally makes the entire Half-Life collection free to play for limited periods (usually around major anniversaries or new game releases). Summary Table Information Developer Gearbox Software Release Year Search Intent High-risk (often associated with piracy/malware) Recommended Source Steam (Official) Compatibility Modern Windows, macOS, and Linux
Released in 1999, Opposing Force is the first official expansion pack for Valve’s groundbreaking first-person shooter, Half-Life . Developed by Gearbox Software, it is widely considered one of the best expansions in gaming history. half-life-opposing-force-free-download-pc-game-full-version
Often discounted to under $2.00 USD during seasonal sales. It is also included in the Half-Life Complete Bundle . While the game is not "Free-to-Play," Valve occasionally