It could be counted as IP infringement, corporate espionage, copyright infringement, trademark infringement, trademark abuse, and I’m sure various other things an actual lawyer would know.

I hate large companies and corporations, I think Nintendo is extremely horrible with a lot of their practices, especially regarding abandonware, archiving, and emulation, but when someone commits various crimes, especially unapologetically and without a just cause, they’re still a criminal.

This is a case of a selfish prick of a man being a criminal against a selfish prick of a company.

Edit: oh and of course, piracy. (Sail the seas fellas, just not in plain view)