With ties to Half-Life and Team Fortress 2, one obscure and totally forgotten Valve FPS game has just hit a new player count ...

Back in the '90s, Gearbox developed three expansions for the original Half-Life, letting us see Black Mesa from a different perspective. Opposing Force put us into the boots of a fresh-faced HECU ...

Added fairly late into Half-Life's development, Gearbox picked up the torch and fleshed them out in Opposing Force, repurposing many of Valve's scrapped ideas. But even then, they’re still the ...