That is just the emulator not a game -_-
But its against the rules to even post a link to a site that has roms.
So I would take that link down.
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but the site also hosts download links to roms
Beat me to it.
Edit
the games arent piracy i dont think? n64 is slightly newer then nes/snes im use to emulating.
and its not necessarily about the games themselves, but the concern is more about the bios of the emulator itself. that COULD be piracy. i dunno where n64 stuff falls right now.
Sometimes the emulator doesn't include the bios, and you have to obtain that yourself.
Though I am pretty certain that the games are considered piracy.