subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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Although the Spiky-eared Pichu obtainable in the Ilex Forest event has a shiny form, this form cannot be obtained in the game itself without hacking.
Information on The Cutting Room Floor page about Shiny Form:
https://tcrf.net/Pok%C3%A9mon_HeartGold_and_SoulSilver#Spiky-eared_Pichu
Video showing off the Shiny Form:
https://www.youtube.com/watch?v=994XEdddWNE
Video of the Ilex Forest Event:
https://www.youtube.com/watch?v=2OORQXikg3w
https://tcrf.net/Pok%C3%A9mon_HeartGold_and_SoulSilver#Spiky-eared_Pichu
Video showing off the Shiny Form:
https://www.youtube.com/watch?v=994XEdddWNE
Video of the Ilex Forest Event:
https://www.youtube.com/watch?v=2OORQXikg3w
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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If playing on a counterfeit cartridge, attempting to play Voltorb Flip in either the Goldenrod Game Corner or Celadon Game Corner will crash the game. It's unclear if this is an Anti-Piracy measure, or if it's a mistake in the ROM of Heart Gold and Soul Silver.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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Towards the end of the opening sequence, it displays the 3 Johto starters moving across the screen. Chikorita and Totodile use their in-game sprites. However, Cyndaquil uses a different sprite than what is actually in the game, and this sprite isn't used as Cyndaquil's sprite in any previous or future game, suggesting it may be a beta sprite.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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In Cianwood City, if you have only one Pokemon in your team and it does not know Fly or Surf, a generous Trainer in the island's Pokemon Center will give you a Level 15 Tentacool, claiming to have caught too many and was just about to release it before he noticed your situation. This was added to prevent the player from softlocking the game in Cianwood City by giving the player a Pokemon that can learn the Surf HM in order to leave. Additionally, it is possible for the Tentacool given to you to be Shiny.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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In Generation II, Cerulean and Fuchsia City didn't use their music from Generation I, and shared themes with Celadon City and Viridian City, respectively. However, when remade, Cerulean and Fuchsia were given their Generation I theme again, but because they didn't have this theme in Generation II, when using the GB Sounds, an original Generation II-styled remix was used.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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HeartGold and SoulSilver include the Champions from each of the previous paired versions: Blue from Red and Green, Lance from Gold and Silver, Steven Stone from Ruby and Sapphire, and Cynthia from Diamond and Pearl.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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If you interact with your Snorlax in Mt. Silver in the game, it will say; "SNORLAX is feeling very eager". This is due to Red in Mt. Silver also owning a Snorlax. Unique messages will also appear if you interact with Pikachu or Charizard.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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The Kimono Girls' dance to summon a member of the tower duo primarily consists of circular motions. In HeartGold, they move clockwise, and in SoulSilver, they move counter-clockwise.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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The Togepi that hatches from the egg given to the player by Professor Elm has the egg move Extrasensory. This means that the Togepi's father was either a Hoothoot or a Noctowl.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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When you team up with Lance in the Rocket HQ. He has a LVL.40 Dragonite which is 15 levels lower that what it should be. Also, when you fight him for the first time as champion, his three Dragonites are a few levels lower. This also happened in the Game Boy versions.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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These 2 games mark the first time that the English versions were announced before the games were released in Japan.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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If the game detects that it is being played on a flash cart or emulator, it will freeze at the beginning of a battle with the player's Pokeballs spinning constantly.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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There's an item named 'GB sounds' which stands for Game Boy sounds, and is only obtainable after you beat all 16 gym leaders. Despite the fact that the GB Sounds is supposed to sound like the original music from the Game Boy and Game Boy Color, none of the songs sound exactly like the originals. The reason that GB Sounds doesn't perfectly emulate the original soundtrack is due to the games using a sound font for MIDI playback, rather than generating real 8-bit chiptune sounds.
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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The two Bird Keeper trainers that you face on Route 20 are named Bert and Ernie, referencing the Muppet duo from the children's television series "Sesame Street" who have a fondness for pigeons and rubber ducks respectively.
Screenshot and in-game footage:
https://www.youtube.com/watch?v=YU8nLqXB6fY
https://twitter.com/HistoryMuppet/status/1497977914465345547
Bert's association with pigeons:
https://www.youtube.com/watch?v=RK9nRJXAUzg
Ernie's association with rubber ducks: https://www.youtube.com/watch?v=Mh85R-S-dh8
https://www.youtube.com/watch?v=YU8nLqXB6fY
https://twitter.com/HistoryMuppet/status/1497977914465345547
Bert's association with pigeons:
https://www.youtube.com/watch?v=RK9nRJXAUzg
Ernie's association with rubber ducks: https://www.youtube.com/watch?v=Mh85R-S-dh8
subdirectory_arrow_right Pokémon SoulSilver Version (Game)
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The release of Pokémon HeartGold and SoulSilver Version got delayed for Flanders (the Dutch-speaking area of Belgium) and the Netherlands. The reason was because of a save data bug found in English copies of Pokémon HeartGold meant for those two regions. The bug caused certain Pokémon HeartGold copies to not be able to read its save data, even when there was none - rendering the game unplayable.
The game released eventually on April 2nd, 2010 - one week later than the pan European release date (March 26th, 2010).
The game released eventually on April 2nd, 2010 - one week later than the pan European release date (March 26th, 2010).
Archived Dutch article, mentioning that an Intertoys (Dutch toy store retail chain) employee stumbled upon the save bug, with screenshot of said error:
https://web.archive.org/web/20100604191712/http://www.insidegamer.nl/nintendods/pokmonheartgold/nieuws/29248/UPDATE-Intertoys-Pokmon-HeartGold-uitgesteld-vanwege-bug.html
Announcement on the Dutch website of Nintendo - sadly the actual announcement text is lost to time:
https://www.nintendo.nl/Nieuws/2010/Lancering-Pokemon-HeartGold-Version-en-Pokemon-SoulSilver-Version-uitgesteld-259989.html
Announcement on the new release date for Flanders and the Netherlands - verifying that both regions having been affected by the delay and announced the new release date - April 2nd:
https://www.nintendo.nl/Nieuws/2010/Lanceerdatum-Pokemon-HeartGold-Version-en-Pokemon-SoulSilver-Version-bevestigd-259986.html
Announcement for a (Dutch) teaser website of Pokémon HeartGold and SoulSilver - confirming its earlier release date being March 26th in the article:
https://www.nintendo.nl/Nieuws/2010/Nieuwe-Pokemon-HeartGold-Version-Pokemon-SoulSilver-Version-teasersite-geopend--252309.html
https://web.archive.org/web/20100604191712/http://www.insidegamer.nl/nintendods/pokmonheartgold/nieuws/29248/UPDATE-Intertoys-Pokmon-HeartGold-uitgesteld-vanwege-bug.html
Announcement on the Dutch website of Nintendo - sadly the actual announcement text is lost to time:
https://www.nintendo.nl/Nieuws/2010/Lancering-Pokemon-HeartGold-Version-en-Pokemon-SoulSilver-Version-uitgesteld-259989.html
Announcement on the new release date for Flanders and the Netherlands - verifying that both regions having been affected by the delay and announced the new release date - April 2nd:
https://www.nintendo.nl/Nieuws/2010/Lanceerdatum-Pokemon-HeartGold-Version-en-Pokemon-SoulSilver-Version-bevestigd-259986.html
Announcement for a (Dutch) teaser website of Pokémon HeartGold and SoulSilver - confirming its earlier release date being March 26th in the article:
https://www.nintendo.nl/Nieuws/2010/Nieuwe-Pokemon-HeartGold-Version-Pokemon-SoulSilver-Version-teasersite-geopend--252309.html
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