Base ROMPokémon FireRed
PokémonGen 1–9 + all regional forms
CreatorKevin PokeFan — v8.0
GBA demake · Switch Let's Go · Eevee partner · Gen 1–9

Let's Go Eevee GBA

Pokemon Let's Go Eevee GBA is a Pokémon FireRed ROM hack by Kevin PokeFan that brings the Nintendo Switch Let's Go, Eevee! experience to the Game Boy Advance. This is not just an Eevee-starter reskin — it is a full demake that rebuilds Kanto with Gen 1–9 Pokémon, all four sets of regional forms, Mega Evolution, PokéRides, new maps, new events, wormholes, and the Sevii Islands.

Eevee joins you with its original cry. Trainer May appears as a character. Mew is obtainable from the start. Move Tutors are infinitely reusable. Gym leaders are rematchable in the postgame. The companion version — Let's Go Pikachu GBA — runs alongside it with version-exclusive differences mirroring the Switch pair.

Language note: The official releases by Kevin PokeFan are in Spanish. An unofficial community English translation of v6.0 exists. Check the version you are playing if language matters to you.
🦊 Eevee partner starter with original cry
🐾 Gen 1–9 Pokémon available
⚡ Mega Evolution
🌺 Alolan · Galarian · Hisuian · Paldean forms
🏍️ PokéRides system
🗺️ New maps, wormholes & events
🏝️ Sevii Islands
🔁 Infinite Move Tutors
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About Pokemon Let's Go Eevee GBA

When Nintendo released Pokémon: Let's Go, Pikachu! and Let's Go, Eevee! on Switch in 2018, they revived the Yellow-era Kanto adventure in a new style — simplified catching, a partner Pokémon that follows you everywhere, and a roster anchored to the original 151 with just a few additions. Kevin PokeFan took that concept and asked what a GBA version might look like, then actually built it.

Let's Go Eevee GBA is a demake rather than just an inspired hack. It attempts to translate the Switch game's features — partner starter, regional forms, the Let's Go style of Pokémon presentation — onto the FireRed engine, and adds a substantial amount on top: Pokémon from Generations 2 through 9, every set of regional forms up to Paldea, Mega Evolution, new area layouts, and postgame content the Switch original never had.

The hack has been through multiple major versions, reaching v8.0. It is actively maintained and updated, with each version adding Pokémon, fixing bugs, improving sprites, and expanding content. The most recent versions added Gen 9 Pokémon, Hisuian and Paldean forms, and new exclusive attacks for Galar, Hisui, and Paldea creatures.

🦊 What makes the Eevee version distinct from the Pikachu version The differences mirror the original Switch pair: different partner starter (Eevee vs Pikachu, each with original cries), version-exclusive wild Pokémon encounters, different Alolan variants available, and one key feature split — the Safari Zone is available in Let's Go Pikachu but not in Let's Go Eevee. Everything else — maps, events, main story, regional forms, Mega Evolution — is shared.

Main features

🦊 Eevee as partner starter — with original cry and unique character presence
🐾 All Pokémon from Generations 1–9 available across the game
⚡ Mega Evolution — rival trainers also use Mega Pokémon
🌺 All four regional form sets: Alolan, Galarian, Hisuian, Paldean
🏍️ PokéRides system replacing HM usage
🗺️ New maps, new characters (including Trainer May), and wormholes
🏝️ Sevii Islands accessible in the postgame
🔁 Move Tutors are infinitely reusable throughout
⭐ Mew obtainable from the start of the game
🏆 Gym leader rematches available in the postgame
💎 New evolutionary stones and new ways to obtain them
⚔️ HM Flash replaced with Thunder Wave — more useful in battle
🧬 Best movesets assigned to many Pokémon across all generations
📈 Wild Pokémon levels raised on several routes for better pacing

Versions & the Language Situation

Pokemon Let's Go Eevee GBA has been released in multiple versions, and the language situation is worth understanding before you play.

Official language: Spanish. Kevin PokeFan creates and releases the hack in Spanish. He has stated he does not plan an official English version. An unofficial community English translation of v6.0 exists and has been shared online, but it is not kept up to date with newer releases. If you play the v8.0, you are playing in Spanish.

Version history highlights

v8.0 — Current (Spanish)

The most recent full release. Includes Gen 9 Pokémon, Paldean forms, Hisuian forms, improved sprite quality for multi-gen Pokémon, new exclusive attacks for Galar/Hisui/Paldea creatures, new events, and bug fixes from v7.0.

v7.0 — Costume variants (Spanish)

Introduced two Eevee costume variants for the Eevee version — Sylveon Costume and Police Costume. Added new overworld Pokémon on certain routes and expanded the Prodigious Exchange for wider Pokémon availability.

v6.0 — English fan translation available

The most recent version with a community English translation. Does not include v7.0 or v8.0 content. If playing in English is important to you, this is the version to seek out.

Let's Go Pikachu companion

Kevin PokeFan also created Let's Go Pikachu GBA, updated alongside Eevee. Has the Safari Zone (Eevee does not). Version-exclusive Pokémon and Alolan variants differ. Both hacks are available on RomHaven.

Pokémon & Regional Forms

One of the biggest selling points of Let's Go Eevee GBA is the sheer scope of the roster. The original 151 Kanto Pokémon are joined by creatures from Generations 2 through 9, and every set of regional variants is represented.

All four regional form sets

  • Alolan forms (from Sun and Moon) — available in both versions, with version-specific differences in which Alolan variants appear
  • Galarian forms (from Sword and Shield) — including Galarian Pokémon with their unique typings and evolution methods
  • Hisuian forms (from Legends: Arceus) — added in v8.0, with Hisuian evolutions handled through new in-game items
  • Paldean forms (from Scarlet and Violet) — also added in v8.0, alongside new exclusive attacks for Paldea region Pokémon

Mega Evolution

Mega Evolution is available for Pokémon that received Mega forms in X, Y, Omega Ruby, and Alpha Sapphire. This is not limited to the player — rival trainers and gym leaders in the postgame also use Mega Pokémon in their teams, making rematches more demanding than the initial gym challenges.

New evolutionary stones

Several new evolutionary stones have been added to the game alongside new ways to obtain them. This supports the wider roster of cross-gen and regional evolutions that were not in the original FireRed — you will not be locked out of evolutions that require items not normally found in Kanto.

Who should play Pokemon Let's Go Eevee GBA

  • Fans of the Nintendo Switch Let's Go games who want to experience a similar adventure on a GBA-compatible device or browser — the demake premise is the main draw.
  • Players who specifically want Eevee as a partner starter and enjoy building teams around it in a Kanto setting.
  • Collectors who want the widest possible roster access — Gen 1–9 with all four regional form sets gives extraordinary team-building options for a FireRed base.
  • Spanish-speaking players, for whom this hack is natively designed and fully supported.
  • English-speaking players who are comfortable playing with Spanish text, or willing to seek out the v6.0 community translation.
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Tips for new players

  • Use Eevee's flexibility early. Eevee can evolve into eight different forms, each covering a different type. Your early team direction — and what types you will need coverage for — can influence which Eeveelution is most useful for your run.
  • Check Move Tutors early and often. Move Tutors are infinitely reusable in Let's Go Eevee GBA. There is no reason to ration them — use them freely whenever you want to teach a Pokémon a move, and revisit tutors as your team evolves.
  • Mew is available from the start. Unlike the original Switch game, Mew does not require a Poké Ball Plus accessory here. Find it early and decide whether you want to incorporate it into your team.
  • HM Flash is gone. It has been replaced with Thunder Wave, which is far more useful in battle. Your utility move slot is now genuinely competitive.
  • Wormholes open up the roster. New wormhole areas added to the hack provide access to Pokémon from later generations that would not normally appear in Kanto. Explore them when they become available.
  • Postgame rematches are harder. Gym leaders in the postgame use Mega Pokémon and teams drawn from the full Gen 1–9 roster. Build for rematches with that in mind rather than assuming they mirror the initial challenge.
Also from Kevin PokeFan: Pokemon Let's Go Pikachu GBA — the companion version with Pikachu as your partner and the Safari Zone available. All other core features are shared.
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Frequently asked questions

What is Pokemon Let's Go Eevee GBA?

A Pokémon FireRed ROM hack by Kevin PokeFan that demakes the Nintendo Switch Let's Go, Eevee! game for the GBA. It features Eevee as a partner starter, Gen 1–9 Pokémon, Mega Evolution, all four regional form sets, PokéRides, new maps, wormholes, the Sevii Islands, gym leader rematches, and reusable Move Tutors.

Is it in English?

The official releases by Kevin PokeFan are in Spanish. An unofficial community English translation of v6.0 exists, but it is not kept current with newer versions. The most recent v8.0 is Spanish only.

What is the difference between the Eevee and Pikachu versions?

Partner starter (Eevee vs Pikachu), version-exclusive wild Pokémon, different Alolan variants, and one key split: the Safari Zone is available in the Pikachu version but not the Eevee version. Everything else — maps, events, forms, Mega Evolution — is shared.

What regional forms are included?

All four sets: Alolan (Sun/Moon), Galarian (Sword/Shield), Hisuian (Legends: Arceus), and Paldean (Scarlet/Violet). Hisuian and Paldean forms were added in v8.0.

Is Mew available without a Poké Ball Plus?

Yes. Unlike the original Switch game which required a physical Poké Ball Plus accessory, Mew is obtainable directly in the game from the beginning of your adventure.

Can I play on mobile?

Yes. RomHaven's browser emulator works on both mobile and desktop without any downloads required.

If you liked this, try these

More Kanto adventures, hacks with wide Pokémon rosters, and regional-form-rich experiences worth playing after Let's Go Eevee.

Pokemon Let's Go Eevee GBA Eevee partner · Gen 1–9 · All regional forms · Mega Evolution · Sevii Islands.
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