How to Spot Fake Game Cartridges and Reproductions

Reproductions, Bootlegs, and Fakes

Collectors use a few overlapping terms. A reproduction (repro) is an unofficial modern copy of a game, sometimes openly sold as such for playing purposes. A bootleg is an unauthorised copy from the era itself. A fake is either of the above being passed off as an original — and that's the problem. An honestly-labelled repro is a cheap way to play a rare game; the same cartridge sold as authentic is fraud.

None of these carry collector value. The entire market value of a rare cartridge lives in its originality.

External Checks: What to Look For in Hand

Most fakes fail an external inspection if you know where to look:

• Label print quality — originals have sharp, correctly-coloured printing. Fakes are often slightly blurry, over-saturated, or printed on flat paper where the original had a satin or holographic finish.
• Embossed stamp codes — Nintendo pressed a small number/letter stamp into the back label or shell of most cartridges. Fakes print it flat or omit it.
• Shell plastic — original shells have a consistent texture and colour. Repro shells are often glossier, lighter, or a subtly wrong shade of grey.
• Screws — Nintendo and Sega used clean, precision security screws (3.8mm / 4.5mm "gamebit" heads on Nintendo). Rough, burred, or Phillips-head screws on a cartridge that should have security screws are a red flag.
• Seams and fit — original shells close tight. Gaps, rattles, or mismatched halves suggest the cart has been reshelled or was never original.
• Weight — many fakes use smaller boards and feel noticeably light.

Compare against a known-genuine cartridge from the same platform whenever you can — differences that are hard to describe are easy to feel side by side.

Internal Checks: Opening the Cartridge

If you own the cart (or the seller allows it), the circuit board is the definitive test. With the correct security bit, opening a cartridge takes seconds and doesn't harm it:

• Manufacturer markings — genuine Nintendo/Sega boards carry the company name, a board revision, and a year, silk-screened cleanly onto the PCB.
• Chip labels — original mask ROM chips have etched or printed part numbers matching the game. Fakes often use flash chips with sanded tops or paper labels.
• Board size — genuine boards fill the shell and lock into its guide rails. A half-size board is an instant fail.
• Solder quality — factory boards have uniform, machine-made solder joints. Hand-soldered joints or jumper wires are strong signs of a fake (Nintendo never shipped jumper wires).
• Save battery — battery-backed games should have a properly tabbed and soldered coin cell, not a glued or bare battery.

The Usual Targets

Counterfeiters follow the money. Be extra sceptical with:

• Pokémon — every generation, especially Game Boy / GBA cartridges. The most-faked games in existence; assume fake until proven otherwise on marketplace listings.
• High-value SNES and NES titles — Earthbound, Chrono Trigger, Little Samson, and other four-figure carts.
• Late, rare PAL and NTSC-J exclusives with small print runs.
• Anything sold new-in-box from overseas marketplaces at a fraction of market price.
• Boxed rarities — reproduction boxes and manuals paired with genuine loose carts, sold at full CIB prices.

That last one matters even when the cartridge is real: a genuine cart in a repro box is a loose cart plus paper, not a CIB copy. Our CIB guide covers what completeness actually requires.

Buying Smart

• Ask for photos of the board, not just the shell — a legitimate seller of an expensive cart will open it.
• Check the label against reference photos of a verified original (cover art databases help here).
• Verify the serial number and barcode format matches the region's original release.
• On marketplaces, check seller history for the same rare title sold repeatedly — nobody organically finds five copies of Earthbound.
• If the price is dramatically under market, you are the mark, not the winner.

If You've Bought a Fake

Document everything with photos, including the board. Most marketplaces side with the buyer on counterfeit claims — "item not as described" applies squarely to fakes sold as originals. Report the listing so the next collector doesn't get burned, and don't resell it as genuine yourself: knowingly passing on a fake is the same fraud you were a victim of.

How Retrollect Helps

Every package on Retrollect documents what an original release actually looks like — cover art, barcode, serial number, region, and contents — so you have a reference point when a listing looks off.

• Compare a seller's photos against the catalogued cover art and packaging
• Check the barcode on a box against the package's recorded EAN/UPC
• See which regional releases actually exist — a "US version" of a PAL-exclusive is fake by definition
• Record the authenticity notes for your own copies as you verify them