POKÉMON RED · BLUE · YELLOW

Catch all 151. Never lose a save.

A guide that routes the game around your goals and your save file — and a save editor that keeps every upload as a version, like Git for your cartridge.

Bulbasaur Charmander Squirtle Pikachu Eevee Snorlax Dragonite Mew

PILLAR 1

A guide that knows where you are

Pick a goal — a badge, a handful of Pokémon, or all 151 — and the route rebuilds itself around what you have already caught. Drop in a .sav and it picks up exactly where your cartridge is.

Route 16 — HM02 Fly step 21 / 36
Route 16 — HM02 Fly
Doduo #084 Doduo — Routes 16-18 grass Caught ✓

PILLAR 2

Git for your cartridge

Every upload is kept as a version — browse it, compare it, download it. Edit money, badges, party and boxes; edits follow the real Gen 1 formulas and save as a new version.

SACHA Yellow 7 versions
Aug 12, 15:20 12 owned · 4 badges +1 owned
Aug 11, 22:08 modified + Earth Badge
Aug 11, 12:17 First upload Download .sav

How it works

Three steps between you and a full Pokédex.

01

Start a playthrough

Pick Red, Blue or Yellow and set its goals — a badge, a handful of Pokémon, or all 151. Change them whenever you like.

02

Follow the guide

It routes you to your goals and says when something needs a trade, another version, or a one-per-save choice.

03

Sync your save

Tick catches by hand or upload your .sav at any time — the app reconciles both, and keeps every upload as a version.

THE GUIDE

Not a walkthrough. Your walkthrough.

✓ Goal-driven routing. The route trims itself to the steps that matter for your goals — nothing more.
✓ Save-aware. Upload a .sav whenever you like: caught Pokémon, badges and your position reconcile on their own.
✓ Knows the traps. Version exclusives, link-trade evolutions and one-per-save choices are flagged before they cost you a run.
✓ Companion runs. Going for all 151? It works out which picks need another version and tracks the trades between them.

Your route — 36 steps · you are at step 21

20 Rocket Hideout — The Silph Scope
21 Route 16 — HM02 Fly CURRENT
22 Pokémon Tower — Ghosts & the Poké Flute
⚠ 11 picks cannot be caught on Yellow — trade them in, or use a companion run: Butterfree Gengar Magikarp

Save editor — Party

Charmeleon #005 Charmeleon Lv. 30 REPTINCEL
Mew #151 Mew Lv. 51 MEW
+ — empty — Lv. Nickname
Boulder Badge Cascade Badge Thunder Badge Earth Badge 4 badges · 696,969₽ Save as a new version

THE SAVE EDITOR

Edit anything. Break nothing.

✓ Trainer, money, badges, Pokédex flags, the full party and every PC box.
✓ Real Gen 1 math. New Pokémon get legal level-1 moves, DVs and stats straight from the game's own formulas.
✓ Non-destructive. Saving creates a new version — the original stays in your history, one click from download.
✓ French and English carts, emulator saves, cart dumpers and 3DS Virtual Console — all the same 32 KiB.

STRAIGHT FROM THE ROM

Every encounter, level, evolution and price in the guide is checked against the pret disassembly of the games themselves — not copied from a wiki. The maps are rendered from the game's own tile data, and the save parser works on offsets verified the same way. When the guide says a Doduo is in that patch of grass, it is because the ROM says so.

Questions, answered

Does it work with emulators and real cartridges?

Yes. Any 32 KiB Gen 1 battery save works: emulator .sav files, cart dumps from a GB Operator and friends, and 3DS Virtual Console saves. French and English games both work — species are stored as numbers, so the language of the cart makes no difference.

Is editing my save safe?

Saving always creates a new version, so the original file stays in your history untouched and one click from download. Pokémon you do not edit keep their exact bytes, and everything else follows the game's own formulas and checksums.

Do I need to upload a save to use the guide?

No. You can tick catches by hand and the route adapts the same way. The .sav upload is a shortcut, not a requirement.

How does all 151 work on one cartridge?

It cannot be done alone — Gen 1 needs trades. The guide works out which picks are impossible on your version, suggests companion runs on the others, and tracks the trade-ins so you know what is still owed.

Read the full answer →
Where does the guide's data come from?

From the games. Encounter tables, evolution levels, Game Corner prices and save file offsets are all verified against the pret disassemblies of Red, Blue and Yellow. Sprites come from PokéAPI; maps and badges are rendered from the games' own tile data.

Read the full answer →
How do I get an account?

Ask for one. Sign-ups go into a queue and are approved by hand, usually within 72 hours — you will get an email as soon as yours is open.

Ready to finish the dex?

Pick a version, pick a goal — the guide takes over from there.

Request an account