Space Hulk is a 1993 real-time tactical video game for MS-DOS, Amiga and PC-98. The game was based on Games Workshop's 1989 board game of the same name. Set in the fictional Warhammer 40,000 universe, the player directs squads of Space Marines, genetically enhanced armoured soldiers, in their missions to protect the human race from deadly aliens. Space Hulk was developed and published by Electronic Arts, with support from Games Workshop. The game takes place aboard huge derelicts known as space hulks. Drifting in and out of the Warp—an alternate dimension used to cross interstellar distances—these vessels are infested with the four-armed Genestealers. Using overhead maps, the player orders the Marine squads, and controls individual Marines via first-person shooter interfaces. The game features a time-limited option to pause the action while enabling the player to continue issuing commands. Space Hulks theme of pitting slow and heavily armed Marines against fast, deadly Genestealers produced moments of frantic gameplay and a scary atmosphere for its reviewers, earning positive ratings for the game. A few reviewers, however, felt the game was too difficult and proved to be too frustrating. Space Hulk was followed up by Space Hulk: Vengeance of the Blood Angels in 1996. Gameplay The game features 51 missions that involve exterminations, retrieval of objects, and rearguard actions. A campaign, comprising 21 of these missions played in sequence, centres around a story about a Space Marine investigation of a distress beacon in a region of space threatened by Genestealers. The remaining missions are tutorials designed to help players learn the game and standalone missions. Before a mission, the game briefs the player on the objectives and shows a small map of the operational area. Marines are usually are equipped with a gun—the Storm Bolter—for long-range combat, and an energised glove—the Power Fist—for hand-to-hand fighting. For certain missions, the player can customise the squads' armaments, selecting from 10 other weapons, such as Heavy Flamers for destroying targets and the Chainfist for opening locked doors. In the campaign, Marines who survive a mission gain experience, improving their combat abilities and chances of survival for future missions. The player's Marines begin each mission grouped together at one or two starting points of the operational area, while Genestealers continually enter the mission from marked entry points. Gameplay at this stage takes place between two separate interfaces: the Terminator View Screen, where the player takes direct control