Warhammer 40,000 spin-offs include the many side projects, copies, derivatives and other forms of spin-off, the creation of which has been influenced by the Warhammer 40,000 tabletop miniature wargame or its fictional universe. These come in many forms, including other tabletop games, board games, card games, books, comic books, computer games, and even music. Some of these are officially supported by Games Workshop and Citadel Miniatures, but many are not, rather being fan expansions of or additions to the original game.