Zork Nemesis: The Forbidden Lands is a graphic adventure game, developed by Zombie LLC, published by Activision, and released in 1996 for Windows 95, MS-DOS, and Macintosh. It is the eleventh game in the Zork series, and is the first title not to be marketed under the Infocom label. It is the second Zork game by Activision after Return to Zork (1993).

The story, which is darker and less comical than previous Zork games, focuses on players investigating the sudden disappearance of four prominent figures and their children at the hands of a mysterious being known as the "Nemesis", uncovering a sinister plot during their investigations that they must thwart. The game's live-action cast included Lauren Koslow, W. Morgan Sheppard, Allan Kolman, Stephen Macht, Paul Anthony Stewart, Merle Kennedy, and Bruce Nozick.

The game received favorable reviews, despite some criticism of the puzzles and lack of relevance to the Zork setting, and won the 1996 Spotlight Award for "Best Prerendered Art". The game was later re-released by GOG to be compatible with later Windows editions.

The next game in the series, Zork: Grand Inquisitor, was released in 1997.

Zork Nemesis operates from a first-person perspective and uses a simple point-and-click system. The cursor fundamentally allows for interaction with the player's surrounding, changing to symbolize what can be done; a bronze arrows for movement between locations or for changing view angles; a gold arrow for interaction with objects; and a hand icon for objects that can be picked up, or highlight where collected objects can be used. Each location, ranging from corridors, small rooms, and vast halls, can be viewed in panoramic 360-degree to find objects to examine and interact with, with a still screen used when zooming in to examine an object in more detail (i.e. a book). Items collected by the player are stored in a simple inventory that be cycled through with the right mouse-button.

Puzzles in the game generally require the player to find clues that will help them solve it, with puzzles being solved by either finding the right objects to use on them, or finding the right combination of actions to trigger an effect; a score system mostly denotes when a player has completed a section of the game's story.

The game takes place in the fantasy world of Zork, in a region called the Forbidden Lands found within the boundaries of the Great Underground Empire. The player initially is restricted to exploring an ancient temple complex called the Temple of Agrippa, but later gains access to further areas to explore: the Frigid River Branch Conservatory, a musical school and performance hall situated close to Flood Control Dam #7; Steppinthrax Monastery, an abandoned monastery that has fallen into disrepair; Grey Mountains Asylum, a mental institution in the frigid, frozen peaks of the Grey Mountains; and Castle Irondune, a military fort and private museum situated in the Irondune desert.

Vice Regent Syovar the Strong, ruler of the Great Underground Empire, assigns the Player with the task of continuing an investigation that was previously assigned to one of Syovar's agents, Karlok Bivotar. The investigation sought to uncover what happened to four prominent members of the Empire - Doctor Erasmus Sartorius, General Thaddeus Kaine, Bishop Francois Malveaux, and Madame Sophia Hamilton - and investigatage rumours of a curse across a region known as the Forbidden Lands. The Player is sent to the Temple of Agrippa, within the Forbidden Lands, where Bivotar had tracked down the missing people before dying at the hands of a being called "Nemesis". Upon arriving, they encounter the spirit of a young woman named Alexandria, who claims the temple has fallen under a great evil.