Nocturne is a 1999 survival horror action-adventure game developed by Terminal Reality and published by Gathering of Developers. The player takes control of a mysterious agent known only as the Stranger, an operative of the secret U.S. government organization Spookhouse, which was formed by President Franklin D. Roosevelt in the 1930s to combat supernatural threats. The game is set in the late 1920s and early 1930s and spans four separate acts that take the Stranger across the globe: a Gothic castle in Germany, a demon-infested town in Texas, mob-controlled Chicago in the grip of a Frankenstein-like experiment, and a treacherous estate in France. Each act features a self-contained story with its own cast of monsters, objectives, and puzzles, ranging from arcade-style platforming challenges to environmental brain-teasers. Nocturne was built on an in-house engine that pushed the graphical envelope for its time, requiring a 32 MB 3D accelerator to enable features such as real-time shadows, multiple light sources, volumetric fog, and inverse kinematics that animated every part of a character’s body. The game blended third-person action with fixed cinematic camera angles, giving it a deliberately filmic presentation. Upon release, it drew attention for its technical ambition and atmospheric art direction, though it received mixed responses for its uneven artificial intelligence, occasionally unwieldy camera, and flat characterization. Nocturne remains a cult curiosity, remembered for its unique horror aesthetic and as a showcase for early PC 3D technology.