I enjoyed the clever way each screen counted down the differences remaining. Hue differences and missing stars some of hardest to spot. I did not realize until well into the game that the last difference was sometimes hidden until only there was only one remaining. Don't use H early unless absolutely necessary.
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 "Crystal Saga"){kind=icon}
 "Ninja Warz"){kind=icon}
 "Pirates Vs Ninjas"){kind=icon}
 "6 Differences"){kind=icon}
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