Pokemon Heliodor ROM

Pokemon Heliodor rom
When focusing on the main objectives, Pokemon Heliodor is about 25 Hours in length. If you're a gamer that strives to see all aspects of the game, you are likely to spend around 50 Hours to obtain 100% completion.

Pokemon Heliodor is a GBA ROM Hack by Citrus Bolt based on Pokemon Emerald. Pokemon Heliodor is intended to be the "definitive" Generation 3 Hoenn game. It features all 386 Pokemon from Generation 1 - 3, Legendary Pokemon can be recaught, better breeding mechanics, all TM's are purchasable and much more!

You can download the Pokemon Heliodor rom from this page and to play the game you need to download the Visualboy Advance Emulator here.

You need to download and install Visual Boy Advance and then load the rom.

For detailed instructions per device, view below.

Download the official Pokemon Heliodor ROM in the (USA) version for the Game Boy Advance handheld consoles. To fully utilize a GBA ROM game, use our Cheats, Rom Hacks and GBA Roms sections. You can open the Pokemon Heliodor ROM or GBA file by Installing VisualBoyAdvance on Windows, MAC, Linux, Android or IOS/iphone.

Additional Information


Pokemon Heliodor is a GBA ROM Hack by Citrus Bolt based on Pokemon Emerald in English. It was last updated on March 24, 2024.

Also, be sure to check out Pokemon Heat of Fate.


This is a modification of Pokémon Emerald intended to be an interpretation of the “definitive” Generation 3 Hoenn concept while still fitting firmly within the official game ecology.


  • All 386 Pokémon available within Generation 3 are obtainable.
    • Pokémon not normally found in Pokémon Emerald are generated with different game IDs, languages, and pseudo-random number generation methods to replicate the encounters in which they can normally be found in other games.
    • This includes new wild encounter tables post-National Dex acquisition, additional gifts, in-game trades, and an extended roamer quest.
      • If importing a save file from Pokémon Emerald after capturing/defeating the roaming Latias/Latios, speak to the new NPC at the Weather Institute to force the next roamer to initialize.
  • An egg incubator is available for use that relies upon the real-time clock instead of the step counter.
  • All tutor moves found in Generation 3 games are available for purchase at the Battle Frontier.
  • Moves learned by level-up exclusively in Pokémon FireRed and Pokémon LeafGreen are added to the learnsets.
  • Evolution items and Kanto-exclusive held items are available for purchase at the Battle Frontier.
  • The remainder of the Kanto-exclusive items are available at the Lilycove Department Store.
  • For Pokémon Colosseum and Pokémon XD: Gale of Darkness players, Poké Coupons that have been transferred to the cartridge can be used to purchase rare items.
    • Poké Coupons can also be obtained by trading in Battle Points at the Battle Frontier.
  • e-Reader functionality has been restored with version and language restrictions removed.
    • The Legendary Titan dolls can be obtained without issue.
    • e-Card berries can be obtained, although Japanese berries will (obviously) have text errors.
      • The Game Boy Kid in the Cove Lily Motel has an e-Card to scan, allowing an e-Card berry to be obtained without having access to an e-Reader.
    • The Eon Ticket can be obtained, but the event text is slightly garbled.
      • The Eon Ticket can also be obtained during normal gameplay after defeating the Elite Four for the first time.
    • e-Card trainers will be saved, but can not actually be found to battle.
  • Altering Cave’s wild encounters cycle through the unreleased Mystery Gift tables every day.
  • The Pokémon summary screen now shows correct information for all locations in Pokémon Ruby, Pokémon Sapphire, Pokémon Colosseum, Pokémon XD: Gale of Darkness, as well as Pokémon CrystalDust.
  • Breeding mechanics have been changed.
    • Both parents can now pass down Nature and moves.
    • The “Masuda Method” is implemented.
    • A bug affecting IV inheritance has been fixed.
  • If the first member of the party is holding a Scope Lens, only Pokémon of that species will be found in the wild as long as that species is available at that location.
  • Methods to aid in obtaining Shiny Pokémon have been added.
    • As mentioned above, the Masuda Method is implemented.
    • Once the National Dex has been completed, Shiny Charm functionality is activated. (no item needs to be obtained for any of the Charm effects)
    • Successively encountering the same species of Pokémon will increase the odds of encountering a Shiny Pokémon.
  • Once the Hoenn Dex has been completed, Oval Charm functionality is activated.
  • Once the Elite Four has been defeated, Exp. Charm functionality is activated.
    • Catch rates are also boosted by 50% at this point.
  • Net Ball, Dive Ball, and Repeat Ball mechanics have been updated to match the changes made in Generation 7.
  • If any member of the party holds an Exp. Share, the whole party receives experience points from battle.
  • Legendary Pokémon (and Sudowoodo) that have been defeated without being caught will respawn when the Elite Four is defeated.
    • The respawn will only trigger if the Pokémon is not registered as “caught” in the Pokédex, so trading over a legendary Pokémon will interfere with this.
    • Roaming Pokémon will respawn instantly somewhere in the region when knocked out.
    • After every 10 Elite Four victories, all Legendary and Mythical Pokémon (and Sudowoodo) will respawn whether they’ve been captured or not.
  • The clock offset can be changed by pressing ‘B’, ‘Left’, and ‘Select’ on the title screen.
  • Secret Power, Cut, Surf, Strength, Rock Smash, Waterfall, and Dive can be used as long as one of the party members is capable of learning the move.
    • The respective badge is still required.
  • EVs are capped at 252 per stat instead of 255.
    • The cap on EVs able to be earned through vitamins has been removed as well.
  • The battle and summary screens report the correct type and base power for Hidden Power.
  • Synchronize’s field effect is 100% effective.
  • If the first member of the party has Lightningrod or Flash Fire as its ability, there is a 50% chance of finding a Electric or Fire-type Pokémon respectively in a wild encounter if an applicable encounter is possible in that area.
  • Catching a Pokémon yields experience points.
  • All TMs are purchasable.
  • HM moves can be forgotten without the use of the Move Deleter.
  • Trade evolutions can be triggered be leveling up in the Union Room.
    • The Union Room can be entered without the Wireless Adapter connected.
  • Level-up evolutions can be triggered at level 100 by using a Rare Candy.
  • The IV Judge at the Battle Frontier gives specific numbers for all stats.
    • Next door, there is an EV Judge as well as an EV Reseter.
    • An IV Judge is also at the Day Care on Route 117.
  • A clock has been added to the start menu.
  • Pokémon have slight differences in coloration that varies with the individual.
  • Eggs are colored based on the Type(s) of the Pokémon inside.
  • A system similar to Pass/O/Rotom Power has been added and can be accessed through the Power Pad, a Key Item found in the Bag by default.
  • The real-time clock effects the world visually.
  • Trading restrictions with all Generation 3 games besides Pokémon XD: Gale of Darkness have been removed.
  • A Premier Ball can be obtained as a gift for every 10 Poké Balls (of any kind) purchased at the Poké Mart.
  • After a Repel’s effect wears off, and if the player has more Repels in their Bag, they will be asked if they would like to use another immediately without having to go into the menu.
  • Holding ‘B’ while surfing will cause a movement speed increase.
  • The Bag inventory can be sorted.
  • Two more Key Items can be registered to ‘L’ and ‘R’ to be used in the field.
  • Numerous small features and graphics have been changed/added and bugs have been fixed.

Known Issues

  • If the game is saved on a map that has contains a new NPC and transferred to Pokémon Emerald, the game will freeze if the now-invisible NPC is spoken to.
    • This should not be a big deal, since leaving the map removes the issue, so it seems unlikely major progress can be lost this way.
  • If an e-Card berry is obtained, the description text will be offset by a variable amount when viewed in Pokémon Emerald. The berry’s actual functionality should be unaffected, however.
  • If one of the new roaming Pokémon is caught in Pokémon Emerald, it will not have the correct origin game ID.
    • If you are swapping your save file between versions, only capture roaming Pokémon while playing Pokémon Heliodor.



  • The Trainer Card can now be customized at a terminal in Pokémon Centers.
    • When linking with Pokémon Ruby, Sapphire, FireRed, and LeafGreen other player’s Trainer Cards are now displayed as they are in the player’s game.
  • Numerous graphical changes have been made.
    • Tiles and overworld sprites have been modified to fit the style of Pokémon FireRed and LeafGreen.
    • The Summary Screen has been reworked and now resembles the Summary Screen in Pokémon Diamond, Pearl, and Platinum.
    • The Bag has been reskinned.
  • Text has been decapitalized to match the style of Generation 4.
    • A few text issues have also been fixed.
  • Event tickets can now be shared with other players via Mystery Gift and Record Mixing.
  • Pokémon can now be found in puddles and in trees through the use of Headbutt.
  • Standard encounters in grass now have a 10% chance of being a Double Battle.
  • Mass Outbreaks have been redesigned to be more common and more diverse.
    • Swarming Pokémon are also now more likely to be Shiny.
  • Two new Powers have been added.
    • Prize Power now affects money earned from Pay Day.
    • An active Power can now be cancelled to start a different one
    • Power Points now get wiped when starting a new game.
  • A prompt will now appear to place a newly caught Pokémon’s held item into the Bag when sending the Pokémon to PC storage.
  • “B” is now accepted as valid input when sending a newly caught Pokémon to PC storage after nicknaming it.
  • The nurse at the Pokémon Center now has different greetings depending on time of day.
  • Encounter mechanics have been altered.
  • A bug has been fixed that stopped wild Pokémon from being found under breakable rocks.
  • Fly can now be used without actually learning the move.
    • The check for Surf has been fixed.
  • Mewtwo no longer respawns early.
  • Roamer quest respawn mechanics have been altered.
  • The main menu items have been changed.
  • The Battle Frontier in-game trade has been fixed.
  • The Unown event is now triggered correctly.
    • The encounter rate during the event has been lowered.
  • Certain cases of illegal PID and TID generation have been corrected.
  • Pokémon can now gain EVs through battle after they reach level 100.
  • Experience point mechanics have been slightly tweaked.
  • Catch rate mechanics have been tweaked slightly.
  • Pokémon with high friendship levels now gain various bonuses in battle.
  • e-Reader Trainers now correctly represent the Class printed on the card.
  • Move targets now persist between turns in double battles.


  • A system similar to Pass/O/Rotom Power has been added and can be accessed through the Power Pad, a Key Item found in the Bag by default.
  • 38 gift Pokémon Eggs have been added including Starter Pokémon and Pokémon knowing moves they are otherwise unable to learn.
  • A new unique color variation specification has been implemented.
  • Pressing “SELECT” on a ribbon will “equip” it to a Pokémon to give it an epithet when it enters battle,
    • This will be a “secret” feature until I get the UI figured out at some point.
  • A new event involving the Unown has been added.
  • All legendary and mythical (and Sudowoodo) encounters now reset every 10 Hall of Fame entries.
    • The roaming quest and Southern Island encounters are interlinked so that they will only respawn if all roamers and the Latias/Latios on Southern Island are captured.
    • Every respawn will also cause Latias and Latios to swap roles/locations.
  • The day/night cycle now functions on Birth Island, Navel Rock, and Faraway Island.
  • When linking with Pokémon Emerald, the other player will now appear in their green outfit.
    • Gold/Kris sprites will also be displayed when linking with the fork of Pokémon CrystalDust found on this account.
  • Master Balls are now obtainable from the Coupon Exchange.
    • The Poké Coupon/Battle Point conversion has been tweaked to eliminate a loophole that allowed the player to pull a profit by trading back and forth.
  • Movement speed while underwater has been increased.
  • The Acro and Mach Bikes can now swapped via the Bag.
  • Oval, Shiny, Catching, and Exp. Charms will now appears in the Bag once unlocked.
  • Pressing “R” on the start menu is now a shortcut to save the game.
  • Pressing “R” in a battle with a wild Pokémon is now a shortcut to use the last used Poké Ball.
  • Soothe Bell’s effect now matches its behavior in games released after Pokémon Emerald.
  • A random hidden item will now respawn every day.
  • Miscellaneous text strings have been changed.
  • The issue similar to the Berry Glitch that occurs after replacing the RTC battery should no longer occur.
  • A bug introduced in v005 that caused a particular event Pokémon to be corrupted has been fixed.
    • If this happened to affect you, please reach out and I will fix your save file.
    • This Pokémon is also now blocked from learning 3 moves that it can not legally learn.
  • A couple visual bugs have been fixed that occurred when Pokémon level up.
  • A bug has been fixed that caused the Battle Point balance window to remain on-screen longer than it should.
  • The Poké Coupon balance window now disappears more cleanly.


  • Pokémon now have slight differences in coloration that varies with the individual.
  • Eggs are now colored based on the Type(s) of the Pokémon inside.
  • Eggs obtained from Pokémon Box Ruby & Sapphire now have a unique met location text.
  • Mirage Island can be revisited if Mewtwo is in the party.
  • Alternate music tracks will now play for some Post-National Dex encounters.
  • Bead Mail, Glitter Mail, Retro Mail, and Tropic mail can now be bought at the Lilycove Department Store.
  • Pokémon that would have the “Square Shiny” animation type in Pokémon Sword and Pokémon Shield will now have new animation graphics.
    • Shiny and Fateful Encounter icons have been added to the summary screen for applicable Pokémon.
    • The Shiny icon also appears in the battle interface.
  • Text speeds have been increased.
  • 3rd party audio mixer has been updated.
  • More glowing water tiles have been fixed.
  • The clock is now animated in 24-hour mode.

File Name

Pokemon Heliodor

File Size




Release Date

World: March 24, 2024




Citrus Bolt


Game Boy Advance




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