According to your link the situations in which decompilation is legal are extremely limited. For example, under EU law, (1) "a person or entity must have a lice

According to your link the situations in which decompilation is legal are extremely limited. For example, under EU law, (1) "a person or entity must have a licence to use the program to be decompiled" and (2) "Article 6 prescribes that the information obtained through decompilation may not be used for other purposes and that it may not be given to others." Anyway, I'm not saying that the Super Mario 64 decompiled code project isn't cool, because it is. It just probably infringes Nintendo's copyrights in the code, not just in the assets like levels, graphics, and music.