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Games where multiple players work together against AI opponents or the game itself.

Set in a fictional universe, often (but not always) with fantastic or supernatural elements, alternate worlds, magic and monsters.

Science-fiction. Commonly including things like aliens, advanced technology, and settings of outer space or distant planets. 

Games that are normally played on a table or other flat surface, such as board games, card games, dice games, miniature wargames, or tile-based games