Space Hulk is a real-time conversion of the original board game by Games Workshop set in the Warhammer 40,000 universe.
Players control a squad of Space Marines in an maze allowing 90 degree turns which they may view through multiple first person cameras or using an overhead map. Their mission: to wipe out the Genestealers, a vicious alien race inhabiting the derelict ships.
The 5-man squad (sometimes accompanied by another), encased in Terminator armors and armed with long range and melee weapons, can be given tactical orders (executed simultaneously) via map - with an option to temporarily freeze time (to give player more room for thinking).
The game features 51 missions, including tutorial and original Deathwing campaign. The CD-ROM re-release adds extra 9 missions and more digitized speech (in slightly better quality).