System Shock is a 1994 first-person action-adventure video game developed by LookingGlass Technologies and published by Origin Systems. It was directed by Doug Church with Warren Spector serving as producer. The game is set aboard a space station in a cyberpunk vision of the year 2072. Assuming the role of a nameless security hacker, the player attempts to hinder the plans of a malevolent artificial intelligence called SHODAN. System Shock 3D engine, physics simulation and complex gameplay have been cited as both innovative and influential. The developers sought to build on the emergent gameplay and immersive environments of their previous games, Ultima Underworld: The Stygian Abyss and Ultima Underworld II: Labyrinth of Worlds, by streamlining their mechanics into a more "integrated whole". Critics praised System Shock and hailed it as a major breakthrough in its genre. It was later placed on multiple hall of fame lists. The game was a moderate commercial success, with sales exceeding 170,000 copies, but Looking Glass ultimately lost money on the project. A sequel, System Shock 2, was released by Looking Glass Studios and offshoot developer Irrational Games in 1999. The 2000 game Deus Ex (produced and directed by Spector), the 2007 game BioShock, and the 2017 game Prey are spiritual successors to the two games. Gameplay System Shock takes place from a first-person perspective in a three-dimensional (3D) graphical environment. The game is set inside a large, multi-level space station, in which players explore, combat enemies and solve puzzles. Progress is largely non-linear, and the game is designed to allow for emergent gameplay. As in Ultima Underworld, the player uses a freely movable mouse cursor to aim weapons, to interact with objects and to manipulate the heads-up display (HUD) interface. View and posture controls on the HUD allow the player to lean left or right, look up or down, crouch, and crawl. Practical uses for these actions include taking cover, retrieving items from beneath the player character and navigating small passages, respectively. The HUD also features three "multi-function displays", which may be configured to display information such as weapon readouts, an automap and an inventory. The player advances the plot by acquiring log discs and e-mails: the game contains no non-player characters with which to converse. Throughout the game, an evil artificial intelligence called SHODAN hinders the player's progress with traps and blocked pathways. Specific computer terminals allow the player to temporarily enter Cyberspace;