The Hidden: Source is a unique multiplayer total conversion mod for Half-Life 2, focusing on thrilling gameplay dynamics that pit players against a nearly invisible research subject. The game involves a team of players attempting to capture or eliminate the elusive 'Hidden,' who possesses extraordinary agility and strength, creating an intense and suspenseful atmosphere. Players must strategize and work together to outsmart the Hidden while navigating various maps designed to enhance the tension of the chase.

Originally launched in 2005, The Hidden: Source has evolved through several updates, with its final release inIt offers a full version that immerses players in a fast-paced action environment. With its innovative gameplay mechanics and unique premise, The Hidden: Source stands out as an engaging option for fans of action games looking for a fresh multiplayer experience.