campaigns were released specifically for iPad. These campaigns chronicle other Space Marine chapters, and they include rules for additional Space Marine Terminator troopers and weapons. Space Hulk Mission Files: Dark Angels - Bringer of Sorrow Space Hulk Mission Files: Space Wolves - Return to Kalidus Space Hulk Mission Files: Ultramarines - Duty and Honour Spin-offs Two types of spin-offs of the board game have been released - a video game and a card game. Video games Numerous video games based on the Space Hulk board game have been released. Space Hulk, released in 1993, is a real-time tactical game for PC (MS-DOS) and Amiga, developed and published by Electronic Arts. 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. The Space Marines featured in this game are the Deathwing (1st Company) from the Dark Angels Chapter. A game titled Aspect Warriors was under development and planned to be published by Electronic Arts for the Sega Mega Drive but it was never released. Space Hulk: Vengeance of the Blood Angels was released by Electronic Arts in 1995 and 1996, on PC, PlayStation, Sega Saturn, and 3DO. The sequel to the 1993 video game, Vengeance of the Blood Angels combines first-person shooter gameplay with real-time tactical elements. In 2005, a mobile phone version called Warhammer: Space Hulk was released. This game replicated the board game's play mechanics and allowed play as either Space Marines or Genestealers. In 2008, a small group of hobbyists released a PC conversion of the board game, along with assorted scenarios, for free over the Internet. However, within a month the game was removed from the developers' site. They noted that the web download traffic was creating problems, and that Games Workshop were threatening legal action due to THQ's current ownership of the Warhammer 40,000 video game license. According to the development team, their attempts to negotiate for the release of the game with THQ were refused, resulting in the game being rebranded under the name "Alien Assault". A fan-made game called NetHulk is currently available as freeware. It allows two players to compete head-to-head over an internet or LAN connection, or in a hotseat mode. The game's rules do not strictly adhere to the board game, but are a hybrid of