A more modern fan game (not a GBA ROM, but playable on Android via JoiPlay) that offers a high-definition take on the Indigo League.

For the best experience on a phone, enable "Linear Filtering" in your emulator’s video settings to smooth out the pixels, and map the B button to "A" and A button to "B" so you can run with one thumb.

However, is a very popular ROM Hack (a fan-made modification). Created by passionate developers, this hack transforms Pokémon FireRed into a game that follows the anime storyline.

If you want to literally follow Ash Ketchum’s journey—catching a Pidgeotto, meeting his specific companions, and facing anime-exclusive events—you need a .

: Widely considered the best for an anime-faithful experience. You play as Ash, start with Pikachu, and follow the exact events of the Indigo League anime. Pokémon FireRed Rocket Edition

: A direct recreation of the first season featuring an alternative intro where you can actually get Bulbasaur, Squirtle, or Charmander if you reach Professor Oak’s lab within 15 seconds.