The $50 Epilogue GB Operator has a brand-new trick up its sleeve. In addition to backing up Game Boy, Game Boy Color and Game Boy Advance cartridges and saves to a PC (and writing saves back to carts again!), it can now plug into your phone with a brand-new Retrace app for Android and iOS. The idea: check if cartridges are legit, and how much they’re worth, before you buy or sell them.

Is it reliable? I plugged around 50 cartridges into the app, and… it could use some work. While most of my English and Japanese library was detected without a hitch, it also called a few counterfeit cartridges “authentic,” a number of authentic cartridges “co …

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