3saster

Well in this case, the Master Levels are something that are being commercially sold, and a basic repackaging means that someone can obtain a copy of the master levels for free without needing to pay for it. That constitutes piracy, and ignoring the issues of whether piracy is right or wrong, it is something that is illegal at the moment, so you don't want to go out posting your links in the open. With that being said, what can be done (and indeed, what the similar WadSmoosh project does, which is fairly widely used) is that it provides a program to build the combined WAD. When it gets ridiculous is when companies start going after that; Nintendo is notorious for shutting down Rom Hacks, despite that Rom Hacks nowadays are generally a patch file to turn a pre-existing rom (which can be aquired legally) into a hacked version of the Rom, so nothing illegal is going on there.