Pokemon Unova Emerald

Pokemon Unova Emerald

Download Pre-Patched Pokemon Unova Emerald GBA ROM Hack

  • Creator: Jaizu
  • Version: Beta 1.2.4
  • Hack of: Emerald
  • Updated: April 26, 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 April 26, 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 1.2.4

  • Fixed black screen after beating the Champion, this time for real -hopefully-
  • Palpitoad and Seismitoad can learn Waterfall and Dive
  • Fixed Sidney’s Sharpedo level
  • Fixed wrong item descriptions in the Battle Frontier

Known bugs

  • Passing down natures is broken, even with a Ditto and an Everstone, we are looking into it.
  • Weird bugs in 1vs2 battles, like strings not acting correctly or some items like Revive breaking there. This is a bug with the engine that I’m using and they don’t allow disabling 1vs2 battles, so we just have to wait until they fix it.

Beta 1.2.3


  • EV cap is always 255 and not 252 in some places.
  • Fixed evolution with held items, your Onix won’t evolve with a random item anymore.

Beta 1.1.0


  • Items acting a bit weird in battle
  • Rare Candies not working as they should
  • Cries wrong


Extra Exp Mode gives extra exp to nuzlockers and level cap users. 4x. Exp if all on!



Useful Stuff



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