Pokémon FireRed & LeafGreen walkthrough

14 parts, one per checkpoint Pokémon FireRed & LeafGreen’s own documentation defines: the areas each one opens, the wild Pokémon and trainers in them, and the fight at the end of it. Everything here is read off the game’s own files, so anything it doesn’t state isn’t claimed.

1. Part 1: Just started — no badges

   6 areas · 14 trainers · Rival Blue (Bulbasaur), Rival Blue (Charmander), Rival Blue (Squirtle) and 3 more

2. Part 2: Beat Brock — Pewter City Gym, badge 1

   15 areas · 78 trainers · Rival Blue (Bulbasaur), Rival Blue (Charmander), Rival Blue (Squirtle) and 1 more

3. Part 3: Beat Misty — Cerulean City Gym, badge 2

   1 area · 3 trainers · Misty

4. Part 4: Got HM01 Cut — S.S. Anne

   10 areas · 87 trainers · Rival Blue (Bulbasaur), Rival Blue (Charmander), Rival Blue (Squirtle) and 1 more

5. Part 5: Beat Lt. Surge — Vermilion City Gym, badge 3

   1 area · 4 trainers · Lt. Surge

6. Part 6: Beat Erika — Celadon City Gym, badge 4

   1 area · 8 trainers · Erika

7. Part 7: Got the Poké Flute — Pokémon Tower

   9 areas · 86 trainers · Boss Giovanni, Rival Blue (Bulbasaur), Rival Blue (Charmander) and 1 more

8. Part 8: Beat Koga — Fuchsia City Gym, badge 5

   11 areas · 44 trainers · Koga

9. Part 9: Beat Sabrina — Saffron City Gym, badge 6

   1 area · 8 trainers · Sabrina

10. Part 10: Beat Blaine — Cinnabar Island Gym, badge 7

    1 area · 8 trainers · Blaine

11. Part 11: Sailed to One Island — Bill's Seagallop

    9 areas · 28 trainers

12. Part 12: Beat Giovanni — Viridian City Gym, badge 8

    3 areas · 35 trainers · Champion Blue (Bulbasaur), Champion Blue (Charmander), Champion Blue (Squirtle) and 8 more

13. Part 13: Got the Rainbow Pass — Four to Seven Island

    26 areas · 71 trainers

14. Part 14: areas the documentation doesn’t place

    4 areas

It also doesn't say when 4 of its areas open up, so they are listed together in the last part rather than guessed into the story.

What you can catch at each checkpoint · Every area