Space Hulk
Possibly /tg/s favorite board game, rivaled by a select few such as HeroQuest and Settlers of Catan.
Features two small factions from the 40K universe: Genestealers, a subspecies of Tyranid who tend to infest Space Hulks so they can OM NOM NOM. The other faction is compossed of a Space Marine Terminator squad, who enter these hulks to recover long lost technology and pretty much kill everything they see. The game is fucking hardcore for both sides - Genestealers, because they have no ranged weapons and die from so much as a mean look, and Terminators, because they have little mobility, few numbers, and, for all but a select few Terminators, are very vulnerable in close-range combat. (The deficiencies in hand-to-hand can be made up by equipping Terminators with Lightning Claws or the Thunder Hammer and Storm Shield, both added in the Deathwing Expansion.)
See also
- Alien Assault - A Swedish indie video game that's based around the gameplay of Space Hulk. With enough mods that's listed in the article, you can actually turn the game into Space Hulk, complete with marine chapters, graphics, sounds, and maps.