Adaptations
Orcs have been featured in many adaptations of Tolkien's Middle-earth writings, from film to stage to video games. The Goblins in the 1977 animated adaptation of The Hobbit were likened to the work of Maurice Sendak. They are portrayed in exactly the same manner as the Orcs in the sequel The Return of the King (1980 film).
Some adaptations have made Goblins distinct from Orcs. This was implied in New Line Cinema's The Lord of the Rings film trilogy directed by Peter Jackson, and can be seen in the real-time strategy games The Lord of the Rings: War of the Ring and The Lord of the Rings: The Battle for Middle-earth II. In the former, Goblins can be used alongside common Orcs and Uruk-hai, while in the latter Goblins get their own playable faction.
In the film The Lord of the Rings: The Fellowship of the Ring some Uruk-hai are seen being birthed full-grown from what appear to be sacs in muddy pits. (This is used as a device to allow Saruman to build his army practically overnight, as opposed to taking the time to breed his "improved" Orcs through more conventional means.)
In The Rise of the Witch-king, an expansion pack for The Battle for Middle-earth II, the Angmar faction uses "Gundabad Orcs" as ordinary foot soldiers, referring to their capital of Mount Gundabad. Like the Goblins of the Misty Mountains, they sometimes ride Wargs into battle.
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