Yellow Challenge Run Patch

Latest update: 10th May 2025 (v1.13)

This patch enhances Pokémon Yellow for challenge run playthroughs, adding a wide range of quality-of-life options.

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Swap Starter Pokémon via the OPTIONS Menu.
Option to guarantee perfect DVs for your starter Pokémon.
Option to guarantee specific encounters:
- Spearow on Route 3.
- Paras in Mount Moon.
- Abra on Routes 5-8.
- With this option enabled, HM Friends catch instantly on first ball.
Option to guarantee capture with every Poké Ball until you have enough Dex Entries for FLASH.
Option to disable evolutions for your team.
Trade Evolutions now work via Linking Cord (found in Celadon Mart's Stone Shop).
Option to disable the puzzle in Vermilion Gym.
Pokémon's index numbers have been re-ordered to match the National Pokédex Order. Please note, if you are using a program such as GameHook to read the game's data, you will need to re-order your Pokémon reference list, starting with 0x01 for Bulbasaur and finishing with 0x97 for Mew. Click here to download a re-ordered YML Mapper for GameHook.