Overview
The Combine is a fictional multidimensional empire which serves as the primary antagonistic force in the 2004 video game Half-Life 2 and its subsequent episodes developed and published by Valve Corporation. The Combine consist of organic, synthetic, and heavily mechanized elements. They are encountered throughout Half-Life 2 and its episodic sequels, as well as Half-Life: Alyx, as hostile non-player characters as the player progresses through the games in an effort to overthrow the Combine occupation of Earth.
The Combine are depicted as cruel rulers over the citizens of Earth, suppressing dissent with brutality, using violence to police humanity, and forcibly performing surgery on some to transform them into slaves. Throughout the games, the player primarily battles transformed humans as well as synthetic and mechanical enemies that are the product of Combine technology. In addition to their role within the Half-Life series, the Combine have been adapted by fans for machinima productions and other works.
Design
Certain elements of the Combine's appearance, such as that of the Advisors, are inspired by the works of Frank Herbert. The towering Striders seen throughout Half-Life 2 and its subsequent episodes are based directly on the Martian tripods of the H.G. Wells novel The War of the Worlds, where said Martians invade Victorian England, using the tripods as their main "weapon". The name "Combine" itself is a tribute to Ken Kesey's novel One Flew Over the Cuckoo's Nest, which features a collection of authorities which mechanistically manipulate and process individuals.
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