*All of the trainers in Koga's gym use Janine's sprite in-battle. Janine is Koga's daughter who took his place as the Fuschia City gym leader in ''Gold'' & ''Silver''.
*This game's title renders Pikachu's name as 比卡丘 (Bǐkǎqiū). This is believed to be a fusion of its Mandarin name 皮卡丘 (Píkǎqiū) and its then-current Cantonese name 比卡超 (Béikāchīu), the latter which was in official use in Hong Kong up until the 2016 release of ''Pokémon Sun and Moon''. It should be noted that in actual gameplay, Pikachu's name is still properly rendered 皮卡丘 like it is in Mandarin Chinese.
*This game received an [https://www.romhacking.net/translations/2478/ English translation by Lugia2009].
*Not only was there an English translation, but there was also an article that shows [http://www.romhacking.net/forum/index.php?topic=15461.0 Lugia2009's progress on the English translation].