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Checking Cartridge Authenticity

How to check your game cartridge for counterfeit markers using Playback or Retrace.

3 min read

The easiest way to check your game cartridge is to insert it into your Operator device. Playback (on desktop) and Retrace (on mobile) both check for counterfeit markers automatically, analyzing the internal hardware and game data against our database of known releases.

How it works

When you insert a cartridge, the app:

  1. Reads the game data from the cartridge
  2. Analyzes the cartridge’s hardware characteristics
  3. Displays the authenticity status

This process happens automatically. Just insert your cartridge and look at the result.

Understanding the results

StatusWhat it means
OfficialMatches known official release in our database. No typical counterfeit markers detected.
UnofficialThe cartridge is a reproduction, flashcart, or homebrew game. This doesn’t mean it won’t work. Many unofficial cartridges play fine.
UnrecognizedThe app couldn’t verify the cartridge. This may indicate a counterfeit, a regional variant not in our database, a rare/obscure title, or dirty cartridge pins causing a false positive.

What to do with each result

Official

Your cartridge matches a known official release and shows no counterfeit markers. You can:

  • Play with confidence
  • Trust the save functionality

Unofficial

Your cartridge is a reproduction, flashcart, or homebrew, but it may still work:

  • Homebrew games and flashcarts show as Unofficial
  • Reproduction cartridges may have save issues. See Rewritable Cartridge Save Issues
  • The game should still be playable

Unrecognized

This needs further investigation:

  • Clean the cartridge pins: Dirty contacts can cause read issues. See Cleaning Cartridge Contacts.
  • Check if it’s a regional variant: Japanese or European versions may not be in our database yet
  • Inspect the cartridge physically: See Spotting Fake Games for visual inspection tips
  • It may be counterfeit: If you bought it secondhand, it could be a reproduction

Why authenticity matters

Save reliability

Official cartridges use quality components with predictable behavior. Reproduction cartridges often have modified save mechanisms that can corrupt your progress.

Resale value

If you’re collecting or plan to sell games, knowing authenticity affects value significantly.

Peace of mind

Checking your childhood collection or verifying a recent purchase gives you valuable information about what you own.

Limitations

Software checks are very accurate, but:

  • High-quality reproductions can occasionally slip through. The best counterfeits use authentic-looking chips and unmodified game data.
  • Obscure or regional titles may show as Unrecognized. Not every legitimate release is in our database, and a dirty cartridge pin can also cause a false positive.
  • The check looks at electronics, not the shell. A genuine PCB in a counterfeit shell (or the reverse) will confuse the result.

For the most thorough verification, combine the software check with physical inspection.

See also

Still need help? Contact our support team