Long before the 41st millenia, there was this. One world, many people, and Chaos still existed.
Based on the table top game which is just as awesome as Warhammer 40,000 (Which Ghost_Stalker knows I love) This takes place long before 40k. Even before the Emperor himself, with the first, Sigmar Heldenhammer.
There are several groups: Humans Dwarves:Another of the Old Races, they have less reservations about Human contact. Elves: One of the old races, they enjoy being at a tentative peace with humans. Though they tend to avoid any direct contact wth Humans. Orcs & Goblins: Kinda speak for themselves, don't they? Undead: Vampires, Zombies, Liches...you get the idea. Skaven: Rat men, living in the Chaos Wastes, they are vicious and cunning...at least, some of them are. Actually, because of the Warpstone's effect on their population, only the Skaven Priests are cunning. Beastmen: Affected by Tzeentch, the changer of Ways, these Beast men roam the wastes andother lands alike. And of course... Chaos: Pretty self-explanatory, no?