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I think you are confusing copyright with trademarking. The actual text of the Star Wars novels and images in the films are protected by copyright - you cannot reproduce them without permission. Original terms like Wookie®, Jedi®, and May The Force be With You® would be protected as trademarks.
Ideas and games rules are not protected by copyright as such. If you reword them into original language you could publish your own version of an existing game which would be functionally identical to the original (ie. MRQ). The art and board design of a game can be trademarked and in some cases the game mechanics themselves can be patented - if you can prove them are "novel" and previously un-patented. WotC did this with Magic:The Gathering.
But you can't copyright an idea, concept, "style" or rules system.