Pokémon Red, Blue & YellowActiveUpdated 4 Sept 2026

RBY Challenge Patches

Challenge-run quality-of-life patches for all three English Generation I versions.

Red patchBase SHA-1: ea9bcae617fdf159b045185467ae58b2e4a48b9a
Blue patchBase SHA-1: d7037c83e1ae5b39bde3c30787637ba1d4c48ce2
Yellow patchBase SHA-1: cc7d03262ebfaf2f06772c1a480c7d9d5f4a38e1

CHANGE LOG

Patch notes

v1.1
  • Added Four Moves mode with an opening move picker and permanent four-move limit.
  • Disabled additional captures during Four Moves runs.
  • Added the Explorer Kit, Lantern, Rental Abra, and Air Balloon for field progression without HMs.
  • Made Escape Ropes reusable and refreshed the player and rival name presets.
v1.0
  • Added starter swapping, DV controls, encounter guarantees, Linking Cord evolutions, and the Vermilion Gym puzzle toggle.
  • Reordered species indexes into National Pokédex order.

AT A GLANCE

What changes?

GameHook mappers

The reordered species indexes require matching mapper files when external tools read the game.

  • Red/Blue mapper: /Patches/GamePatches/RBY/redblue-reordered.yml
  • Yellow mapper: /Patches/GamePatches/RBY/yellow-reordered.yml

THANK YOU

Credits

  • pret pokered and pokeyellow contributors
  • Challenge-run testers