Warhammer 40,000 also known as Warhammer 40k, WH40k, W40k or just shortened to 40k is the sister (science fiction) universe to Warhammer, it was created by Games Workshop. Warhammer 40,000 is a dark, brutal, dystopian setting which in many ways mirrors/reflects Warhammer Fantasy, having been created after it. As a result of this mirroring, almost every faction in Warhammer 40,000 resembles one of the various factions of Warhammer Fantasy. The dark setting can be summed up by its official slogan: "In the grim darkness of the far future, there is only war."
See external links for more information.
Relation with Warhammer FantasyEdit
It was said by fans and creators that the Warhammer Fantasy world actually resides within the Warhammer 40,000 universe, in a area somewhere within the Chaos-warped area known as The Eye of Terror. This was first stated because the Old Ones created the Orks and Eldar from the 40,000 universe.
However, the ties between the two universes were completely severed by Games Workshop in later editions of the game.