Slideshow: Marvel Battles Role Players

Marvel says the massively multiplayer lets players create characters that resemble its own, so the company is suing. That's not sitting well with free-speech advocates. By Daniel Terdiman.
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Marvel Entertainment is suing the developers of City of Heroes because it says the game infringes on its copyright and trademarks. Marvel says players can too easily create characters that look like its famous icons.Courtesy of Marvel Entertainment

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NCsoft's City of Heroes is a virtual world in which players create custom superheroes of their own design.Courtesy of NCSoft