Warhammer 40,000 is a science fiction tabletop wargame created by Games Workshop. Set in a dystopian future, it features a universe filled with various factions, including the Imperium of Man, Chaos, and alien races like the Eldar and Orks. Players build and paint miniature models to represent their armies and engage in strategic battles on a tabletop battlefield. The game combines elements of strategy, role-playing, and storytelling. Players use dice to determine the outcomes of their actions, and each faction has unique abilities and lore. Warhammer 40,000 has expanded into novels, video games, and other media, creating a rich and immersive universe.