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A Nintendo product code or (sometimes referred to as the MPN) for Nintendo DS and 3DS games is a unique identifier printed right on the cartridge label, box, and manual — used to catalog and differentiate each title. Think of it like Nintendo’s internal cataloging system. This helps collectors and sellers (and curious gamers) figure out exactly which version of a game they have — whether it’s North American, European, or Japanese. (Usually, there are other obvious dead giveaways such as different language or a CE on the cartridge and different rating systems) And just like PlayStation has their SLUS, SCUS, and BLUS codes (but that’s a whole different blog! 😉), Nintendo kept their own system consistent across these handhelds.

The format looks like this:

NTR-XXXX-XXX (for DS)
CTR-XXXX-XXX (for 3DS)

Breakdown:

  • NTR = Nintendo DS hardware codename, “Nitro.”
  • CTR = Nintendo 3DS hardware codename, “Centra.”
  • XXXX = Four-letter game code.
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