I've always wondered how legal we all are.

[Trop]

http://dwellonit.taterunino.net/2010/11/26/derived-works-and-franchises/

Do you think this applies to reproductions?  I know parodies are protected but other then that you could very well take down the whole video game related side of the internet.

[JonLeung]

Ron Gilbert didn't complain when he saw my Maniac Mansion map; in fact, he even posted a link to it on his Grumpy Gamer blog about the same time the traffic shot up by about a gazillion percent in March 2005. 

[mephea]

it's only illegal when they finally catch jonleung driving his official vgmaps ferrarri.  Luckily, it's in his momma's name.