I have a more interesting question now. Hypothetically, if I were to make a zelda fangame, but used custom sprites, tiles, sounds, etc. and did not include the name The Legend of Zelda in my game, would it be a legal game now? Because, each new Zelda game uses new characters, assuming I did the same, I wouldn't use any of the same characters. Arguably, I would be using Link, however, almost all Zelda games allow you to choose your own name and then refer to you using that name. If I did the same, then it would be left entirely up to the user to call themselves Link, so I wouldn't be infringing copyrights there. Can games be deemed illegal due simply to similarities?