Pokemon Altered Emerald ROM

Pokemon Altered Emerald is a GBA Rom Hack by luuma based on Pokemon Emerald in English. It was last updated on March 11, 2026.

Description

Pokemon Altered Emerald: “What happens when you take (almost) every move and ability from Gen 1 to 7, add some new ones to the mix, and then cram them into just 386 Pokémon?
You get a level of meta diversity the main games could only dream of! Over half the abilities are signature abilities, and moves are no different! You can catch all your favorites here, but they might not be quite how you remember them…

On top of that, I’ve rebalanced and re-teamed the trainers and gym leaders, then freshened up every route in Hoenn and added five new ones. The thing I’m most proud of in the game is the puzzles: they’re optional, fair, and absolutely devilish.” -luuma

Features

• Redesigned Hoenn
• 417 Pokemon available
• Newer gen moves and abilities
• Rebalanced stats
• Completable Dex
• Physical/Special split
• Dizzy Egg and Chacha Dinosaur’s upgraded battle engine, up to gen 7
• A sprawling island challenge which resets your mons to lv1 and lets you battle your way all the way up to level 30 to free yourself from its clutches. But it does perfect your IVs…Map changes throughout, and several new optional routes.
• Overhauled movesets for all mons, with plenty of custom moves and abilities. 417 pokémon are available, all of which have been tinkered, polished, dusted off and enhanced. All of them have been playtested. Disguise Sudowoodo. Shields Down Golem. Truant Skill Swap Claydol. Innards Out Poliwrath. Hundreds more.
• Fly to routes
• Access Pokémarts downstairs in all Pokémon Centres
• Use Nature Power as a replacement for all of Strength, Rock Smash, Cut, Surf, Waterfall, and Dive, or just use the old HMs as usual
• Evolve your team into all their later generation evolutions
• Reuse an updated list of tms and move tutors as much as you want, with exciting new moves. Delete all HMs.
• Use the updated repel system
• A few storyline rewrites (the Magma Base is now an enjoyable little sneaking mission where you have to avoid getting seen. )
• An ability switcher in Mauville
• An egg hatcher in Verdanturf
• An IV checker and nature changer in the Battle Frontier, and an EV checker that can reduce all EVs to 0 by bottling them into EV items. 15 EVs make one EV item, so a mon with 37 HP Evs would give you 2 HP UPs.

New typings

• • Banette is ghost/normal,
  • Parasect is ghost/grass,
  • Marowak is Ground/Ghost
  • Masquerain is water/bug,
  • Celebi is grass/fairy,
  • Probopass is rock/elec
  • And an optional patch with 20 more, as per some requests

Changelog

Version 4.2

• Contests are back, with move data and combos for the new moves courtesy of dizzy egg/chacha/lunos (gen1-6).
• I’ve added move data for my custom moves and for Gen 7.
• Updated the stat documentation completely
• The Secret Power shop in slateport now sells Eject Buttons and Red Cards
• Added a Nature Switcher in the battle frontier
• Added a new trader in the battle frontier
• Added a boy in Mauville that tells you what moves your
• Pokemon can learn from Move Tutors
• Trades have better IVs
• Redid the layout for dewford, mauville, lavaridge and sootopolis gym
• Added a joke patch (and a couple of other patches). Merry April Fools.
• Nerfed Tate and Liza’s party leads from lv52 to lv48

Pokemon Changes

• Castform has far less access to rock moves but learns Aurora Veil, Hydro Pump, and Sandblaster, and is now in the fast experience group.
• Regigigas heavily nerfed from erratic xp group to Medium Fast.
• ***This change will cause your pokemon’s level to change drastically when it next gains experience. This causes a visual glitch. Also, it can trigger the pomeg glitch. Neither of these things are dangerous to your save file.***
• Qwlifish now learns Barb Barrage instead of dive (at level 34). 15 power, 100 accuracy, 5pp. Hits thrice. Each hit lowers the target’s defense. New signature move.
• Kabutops now learns Stone Axe instead of Rock Slide (at level 45). 80 power, 95 accuracy, makes contact and switches the target out. -5 priority. New signature move.
• Huntail/Gorebyss now learn moves much later to match the level they’re obtainable. Wild Lanturn and Sharpedo have 5% chance to hold deepseascale/tooth respectively
• Beautifly learns Bug Buzz rather than Silver Wind
• Butterfree now learns Silver Wind early in place of Powder, and later learns Revelation Dance in place of silver wind. Now has serene grace in place of tinted lens
• Wynaut now learns mirror coat and counter at lv10, rather than lv15
• Rayquaza now learns Aeroblast instead of Dragon Ascent
• Wild Sableye all hold Normal Gems
• Surskit now evolves at lv22 correctly, and Barboach evolves at lv30 correctly.

Useful Links

Pokecommunity

Discord