Pokemon Unova Emerald

Pokemon Unova Emerald

Download Pre-Patched Pokemon Unova Emerald GBA ROM Hack

  • Creator: Jaizu
  • Version: Beta 2.0.2
  • Hack of: Emerald
  • Updated: July 7, 2023

Pokemon Unova Emerald is a GBA ROM Hack by Jaizu based on Pokemon Emerald in English. And it is now available to download. It was last updated on July 7, 2023.

Also, be sure to check out Pokemon World Stadium


This game is mostly Emerald but has the regional Unova dex. This updates the engine and adds plenty of QoL features too, but it’s mostly a wild mon/trainer parties replacement with Unova Pokémon.


  • Replaced dex with Unova (bw2) regional dex.
  • Following Pokémon.
  • Updated battle engine, including moves, abilities, and AI.
  • Updated items to the later gens, including added items from gen iv and v.
  • Form system.
  • Plenty of quality of life changes, like last used ball, pressing b to run, running indoors.


What are the Shiny Odds?

With Shiny Charm:

Where can I obtain the Power Weight, Brace, Belt, Lens, Band, and Anklet items?

In the Trainer Hill price lists.

Where can I obtain Icy Rock, Damp Rock, Smooth Rock, and Heat Rock?

In the Trainer Hill price lists.

Where can I obtain Gen IV Berries?

They’re available as prizes in Slateport Battle Tent.

Is Emerald’s RNG fixed?


Did you remove Feebas spawns?

Feebas will be back once you defeat the Champion.

When can I catch Cobalion, Terrakion, and Virizion?

After you watch the Kyurem, Reshiram, and Zekrom cut scene.


Beta 2.0.2

  • Prof. Pkmn class name renamed to Pkmn Prof.
  • Fixed Wally defeating Gothita
  • Slight trainer party adjustments
  • Sleep mode. Press L R Select to sleep, SELEC START to wake up. Only works in real hardware, not in emulators!
  • Fixed crashes with plenty of move anims
  • Fixed bugs on 1vs2 battles
  • Fixed ability pop-up not properly updating text

Beta 2.0

Important changes:

  • Post-game fight with the Professor Birch, can be rematched daily, increasing it’s level every time.
  • You can rematch Steven now, it also provides daily rematches with level scaling.
  • New Pokédex, using a grid navigation system. Made in collaboration with Lucas. This is not finished, it currently lacks search support and will have more stuff in the future, stay tunned.
  • Added option to choose between the old and new Pokédex in case you need to search function or something breaks.
  • New Copyright screen

Other changes:

  • Day care will show your put Pokémon in the outside, thanks merrp!
  • Updated Wally’s party on the first fight
  • Ability Patch can give a Pokémon with the hidden ability its first ability
  • Replaced type icons to the FR ones to match the ones shown in battle.
  • Made PSS icons in the battle and summary screen be the same ones
  • Better checks for getting HMs to make sure they always work from the party menu without having to learn them in some weird edge cases.
  • Removed abilities from gen 7, 8 and 9.


  • Battle engine fixes, including some items acting weird in double battles.
  • Fixed daycare generating eggs without an ability.
  • Small decap fixes
  • Fixed Forecast and Flower Gift
  • Fixed Waterfall/Dive Hms
  • Fixed small graphical issues in the Key System Settings

Current issues/unfinished stuff:

  • Some 1vs2 battles might be broken, please try to have 2 Pokémon alive in your team before doing double battles, this will get fixed in the future.
  • Move tutor dialogues don’t match the move they are teaching
  • The Pokémon World Tournament has some unfinished assets in the Unova gym leaders mode.
  • Day care pokémon will always display as male gender in the outside



Useful Stuff


Previous Versions


Rom Hacking Hideout: Base engine

Merrp: Follower and day and night system

Paccy: Base images for followers + followers data for gen v mons. Code and data for the PWT.

Azure Keys: Idea for the game, inspired by Pokémon Unova Red

Citrus Bolt, Jaizu: Updated Pokémon Summary Screen

Citrus Bolt: Daily gym leader rematches. Make Flash permanent after using it one time, swarm system.

Timeless Shrine: Title screen

Farore: Main tree

Alistair: Tiles

Poffin Case: Object events

Hyo: Brendan sprites. Brendan and May object events

Squall: Tympole, Lillipup, and Cubchoo Dolls

Sapphire Jester: Show how much Ash you collected

Paccy: Let Pokémon use HMs without learning them

Start Gazaar: Ball sprites

Zekrom, Reshiram and Kyurem backsprites: Dreadwing93, Q.Dylm.

Q.Dylm: Sprite resize.

Deokishisu: Code, some help.

Ghoulslash: Showing sprites and description when obtaining an item.

Some overworld sprites: PurpleZaffre, UlithiumDragon, aveontrainer.

Gen V followers extracted from Generation 8 Pack for Essentials v20.1, with the follower credits: MissingLukey, help-14, Kymoyonian, cSc-A7X, 2and2makes5, Pokegirl4ever, Fernandojl, Silver-Skies, TyranitarDark, Getsuei-H, Kid1513, Milomilotic11, Kyt666, kdiamo11, Chocosrawlooid, Syledude, Gallanty, Gizamimi-Pichu, 2and2makes5, Zyon17,LarryTurbo, spritesstealer, LarryTurbo, joojishibuki

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