Pokemon Orange (Gameboy GB)

Custom fan made game. In this game you are asked by Professor Oak to deliver the GS Ball to Professor Ivy. Professor Oak upgrades the Generation I Kanto Pokédex to a Generation II-style Pokédex and tells you that new Pokémon have been discovered and tells you about the Orange League and Sevii League. Your rival heard what Oak said about the journey and wants to upgrade his Pokédex as well. Your journey begins as you go to the S.S. Anne to the Orange Islands.