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Interestingly, all of their names have a different syntax than the final islands (ex.
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There is data in the game for Sevii Islands 8, 9, 22, 23, and 24, as well as what are probably early versions of 6 and 7. It's possible that this could have housed an NPC who would check how big a certain Pokémon is due to the poster on the wall.
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The misspelling of the word "stereo" in the Driver Test from Ruby and Sapphire was fixed in the equivalent of FireRed and LeafGreen as well as of Emerald, being now correctly spelled in katakana (ステレオ) instead of hiragana (すてれお), and the entry itself was also moved to the bottom. To access it, patch 0x12f342 to 00 00 00 00 and 0x12f35c to 01 FF 09 08 in a Japanese FireRed v1.0 ROM to replace the New Game entry on the main menu with a call to Sound Check (this has the effect of running Sound Check after the title screen if there is no save file). At least Japanese FireRed v1.0 has the Sound Check like Ruby and Sapphire, except it was removed in localizations this time around.
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