Over at NesWorld they have posted an article about pirate Nintendo 64 Carts, whats interesting is that in someways very hard to find games could now be a lot easier to source, interesting to say the least:
forward to early 2017 and the N64 pirates were once again back at Aliexpress, but this time from several sellers and in larger quantities and a lot more titles. The prices has also been reduced significantly, it's now around US$20 - 25 and that's including shipping. Titles vary from crappy games such as Mortal Kombat Mythologies to the crazy awesome Conker's Bad Fur Day, that means pirate carts with 512MBit roms are available as well. This time though there was one cart standing out from the crowd, being The Legend of Zelda: Ocarina of Time "Master Quest". This is the version of Ocarina of Time that made it to a GameCube Zelda bonus disk way back, now on cartridge all the way from China.