This is a sub-page of Prerelease:Pokémon Ruby and Sapphire.
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2001#
December#
Pokemon Heroes Teaser#
At the end of the year, a teaser for the next Pokemon movie was posted showing ancient designs of Latios and Latias. Strangely, the shapes of the designs look different. 
2002#
January#
The fifth movie, Pokémon Heroes is revealed to the public with a summer release, along with the revelation of Latias and Latios. It was also said that a new mainline Pokémon title for the Game Boy Advance featuring Pokémon from that movie would be released later this year, and would contain "over 350 Pokémon".
Wynaut is also revealed, but it has a blue color scheme, conflicting with its green appearance in the Famitsu issue.
Artworks#
The finalized artworks of Volbeat, Duskull, Wynaut, Latias, and Latios dating to January 15 and 31, 2002.
February#
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The game was revealed in an issue of Corocoro, published on March 15, 2002.1
Corocoro Issue #288#
Much of the game was finally unveiled in an issue of Famitsu, after nearly a year without any new information. Duskull, Wynaut, and Volbeat were also revealed as Pokémon.
Location Images
Corocoro Issue #288 |
ポケモン_ルビー・サファイア \ 全マップ.xls |
Final Game |
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- An image of what appears to be the earliest version of Route 123.
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Corocoro Issue #288 |
Final Game |
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- An image of Route 106 and Dewford Town. The water tileset is different from the final.
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Corocoro Issue #288 |
Final Game |
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- An image of completely unknown location, possibly Route 120.
March#
Artwork#
Corocoro Issue #289#
Issue of Corocoro was released on March 15, 2002.2
Logo Reveal
The temporary logo of Pokemon Game Boy Advance title was unveiled. Notably, it has water ripple effects within the font, giving a hint towards the land-and-sea theme of the game. It also bears some resemblance to the Pokémon Sapphire logo, except that the finalized logo is more crystal-like. Pokémon Sapphire was also technically the first to be developed out of the two, as it's internally identified as "Version 1".
Screenshots
Battle Sequence
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Corocoro Issue #289 |
Final Game (JP) |
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Brendan encountering a wild Wynaut.
- The background is slightly duller in color, lacking the blue stripes at the top.
- The text box is more turquoise as opposed to a more green hue in the final.
- Wynaut's sprite was green, despite its finalized cyan coloration being revealed in January 2002 to coincide with the announcement of Pokemon Heroes.
- The Pokemon's health lacks an arrow.
- The player's back sprite is always in the "throwing Poké Ball" pose.



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Corocoro Issue #289 |
Final Game (JP) |
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Brendan's Azurill fighting against Wynaut.
- Azurill's back sprite was darker, closely resembling the palette of their appearance in Pokemon Heroes.
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Corocoro Issue #289 |
Final Game (JP) |
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An early battle sequence between Duskull and Kecleon, containing a handful of differences.
- The HUD seems to be in an incredibly early state, lacking arrows for Pokémon.
- Duskull's sprite has less visible eyes and seems to have a different pattern on its back.
- Kecleon's sprite appears to look unfinished, as it lacks shading.
- As Duskull cannot be found at Level 10, and in a grassy area, it was likely put together via debug mode.
Locations
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Corocoro Issue #289 |
Final Game |
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An earlier version of Petalburg City.
- The Gentleman NPC has gray-black clothing instead of brown in the final, likely due to having a slightly glitched palette. This may have also been adjusted to avoid any unintentional resemblance to Mr. Monopoly, the mascot of the board game Monopoly.
- The paths are made of concrete rather than dirt.
- Notably, Pokemon Centers and the Pokémart stores have the same red-colored roofs. The latter was ultimately changed to blue, likely to avoid confusion.
- The trees around the town are the grouped type used in northeastern Hoenn, rather than regular single trees.
- The houses have extra bushes next to them.
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Corocoro Issue #289 |
Final Game |
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An unknown cave. Possibly the 3rd room of Cave of Origin which requires you to use Flash to see.
Torchic Concept Art#
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A slightly later piece of concept art for the Pokemon Torchic dating to March 29, 2002. While it retains the feather tufts on both sides of its head from its earlier design and has a yellow flame-shaped marking on the back of its head unique to this iteration of the design, its head-to body ratio and wings are like those of the final version. 
Concept Art#

April#
Artworks#

Concept Art#

Corocoro Issue #289#
More information was revealed in Corocoro Issue #289, published on April 15, 20023. It was revealed that Professor Birch would appear.
Screenshots
Battle Sequence
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Corocoro Issue #289 |
Final Game (JP) |
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A slightly later battle sequence.
- The "glitched bar" is no longer present.
- The menu text box is now green.
- First appearance of the Poké Ball graphic to indicate if an opponent Pokémon has been previously caught. The icon is black and white rather than the final red and white design.
- Azurill's front sprite was a bit darker and lacked the lighter colors.
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Corocoro Issue #289 |
Final Game (JP) |
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The desert battle background was shown for the first time.
- Kecleon's sprite has been touched up, with the yellow color being changed a bit.
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Corocoro Issue #289 |
Final Game (JP) |
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A slightly later battle sequence, this time in the water. Wynaut is using Mirror Coat against Wailmer.
- The water is more teal in color.
- Wailmer's sprite looks somewhat unpolished, lacking a proper outline and appearing as dark-blue and white rather than blue and ivory.
Pokédex
Corocoro Issue #289 |
Final Game (JP) |
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A first look at the Pokédex.
- The Pokédex background is more of a teal color compared to the neutral blue used in the final.
- Wynaut is listed as No.???, likely to avoid spoiling too much of the Pokédex.
- The "??" symbol is seen in this image. It would appear in the final game, unused.
- Duskull's Pokédex entry uses a placeholder one.
- There is no button for "Page" on the left, where the "cancel" option would be in the form of a button in that build.
Pretty Petal Flower Shop
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Corocoro Issue #289 |
Final Game (JP) |
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An image of the Pretty Petal Flower Shop interior, with slightly different tilesets.
- The cash register is slightly different.
- The counter is brighter.
- There's a different doormat.
Pokémon Center
A first look at the Pokemon Center interior.
Littleroot Pokémon Lab
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- https://zoidsland.com/1rebyu-/koro02-3b.html↩︎
- https://zoidsland.com/1rebyu-/koro02-4b.html↩︎
- https://zoidsland.com/1rebyu-/koro02-5b.html↩︎
- https://zoidsland.com/1rebyu-/koro02-6b.html↩︎
- https://serebii.net/archive/July-2002.shtml↩︎
- https://nlab.itmedia.co.jp/games/gsnews/0207/20/news09.html↩︎
- https://serebii.net/archive/July-2002.shtml↩︎
- https://serebii.net/archive/July-2002.shtml↩︎
- https://zoidsland.com/1rebyu-/koro02-9b.html↩︎
- https://zoidsland.com/1rebyu-/koro02-10b.html↩︎





















































































