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Notes:Sonic the Hedgehog 2 (Genesis)

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This page contains notes for the game Sonic the Hedgehog 2 (Genesis).

2 Player VS's Interlacing

Sonic the Hedgehog 2-twoplayerexample.png

While well known amongst programming and retro gaming circles, Sonic the Hedgehog 2 is (in)famous for being one of the very rare examples (there's literally only two other examples) of using the Sega Genesis's "interlacing" mode to achieve 448/480 pixels of vertical resolution.

This rather unusual technique is used for the 2 Player VS mode, which allows for two screens to be squished into a single image. While it worked fine during the ages when consumer televisions used cathode-ray tubes, this quirk causes devices like upscalers to not display the image.