Pokemon Tourmaline

“Pokemon Tourmaline” is a Completed GBA Rom Hack made by tdilos. Get ready to discover the brand new Issho region! Professor May will give you your first Pokemon on your birthday to start your journey.

Pokemon Tourmaline Completed GBA ROM Hack

• Creator: tdilos
• Base ROM: Emerald
• Language: English
• Released on: June 19, 2024
• Latest Version: v1.1.1
• Last Updated on: February 09, 2026
• Status: Completed

Also Check Out: Pokemon Peak Kanto

Description

Pokemon Tourmaline is a ROM Hack of and loose sequel to Pokemon Emerald. This game is intended to take place in an alternate timeline where the setting and events have diverged a bit from the official games. Most notably, some mechanics from later gens are absent while others have been reworked, and a number of new mechanics have been introduced.

Story

It’s been several years since the battle of Groudon and Kyogre wrought havoc on the Hoenn region. Humanity’s understanding of Pokemon has deepened as more discoveries are made about the origins of Pokemon. A recent surge of discoveries in the nearby Issho region has drawn researchers from all over the world, including May, now an assistant Pokemon professor. After receiving a Pokemon from her, the player sets out to investigate the reports coming from all over the Issho region of new species of Pokemon, new types of Pokemon, and even more strange phenomena. Meanwhile, a new threat is on the rise in Issho, a mysterious crime syndicate who use exceptionally powerful Pokemon.

Features

• New story, characters, and region
• Mixed Gen Starters
• May has a Professor will give you the starters
• Return of many old characters
• A custom regional Pokedex with 386 Pokemon
• New regional forms of Pokémon from gens 5-8
• There is no Mega Evolution, but some Megas have returned as natural evolutions
• A small number of additional fakemon, including some SpaceWorld designs
• Updated type chart including Fairy type and a new type, Echo, designed to counter Fairies and Ghosts
• 4 new status conditions
• 2 new weather types
• Over 60 new moves and over 20 new abilities
• Buffs to some old Pokemon, moves, and abilities
• Other aspects of the battle system have been updated to gen 8 standards unless otherwise noted
• A custom set of over 100 TMs and HMs
• A large number of other moves available through move tutors
• Return of old features like the day/night cycle, headbutt trees, and daily events
• Various changes to the UI to create a unique experience
• Minor QoL features including faster text, Repel prompts, increased bag size, and menu looping

Change Log

v1.1.1

• May now recognizes a complete Issho Pokédex
• Reworked Battle Frontier tilesets to be compatible with the day/night system
• Changed Southern Island Lati@s encounter level to 40
• Southern Island Lati@s encounter now corresponds to the opposite player gender
• Fixed issues with the Inverse Challenge sidequest
• Added “with no collisions” to the Hot Wheels quest description
• Fixed some other typos
• Fixed various tile/collision errors

IMPORTANT:

• This is the last update compatible with old save files. Future updates will require starting a new game.
• Current version allows access to the Battle Frontier, completion of the Issho Pokédex, and new post-Champion content.
• Known bugs (bag space, Pokédex entries, etc.) remain and will be fixed in future updates.
• Developer is taking a long break; no new updates expected soon.

v1.0.6

• All HM distribution events now account for when the player’s bag is full, fixing potential softlocks.
• Some of the longer dungeons now have NPCs who provide the player with shortcuts in exchange for a fee. These NPCs only appear on Normal difficulty.
• It’s now possible to lower, but not raise, the difficulty setting (talk to NPC on the PokeCenter 2nd floor).
• Restricted saving to PCs only on Insane difficulty (keep in mind this means you can’t save if you have no money left; you’ll have to earn more somehow or lower the difficulty).
• The difficulty setting now displays on the Hall of Fame screen.
• Fixed Violet/Vert not healing the player’s party in Cinerous Tower and Mindaro Gardens.
• Fixed Celebi event glitch that let you battle it infinitely many times.
• Fixed potential softlock in Route 68 boulder section.
• Fixed some misaligned holes in Broadcast Tower.
• Fixed tile error preventing the use of Surf on Route 88.
• Fixed some typos.
• Fixed various incorrect icon sprites.

v1.0.5

• Major improvements to the AI.
• Tentatively fixed Missingno glitch from Cut/Headbutt trees.
• Fixed outdated Dream Ball description.
• Fixed girl in Burgundy Town giving out infinite Friend Balls.
• Fixed potential softlock in Victory Road basement ocean currents.
• “Paleo Pro” quest giver now recognizes Omendenz as a super-ancient Pokemon.
• Fixed a double battle glitch with the cowgirl and rancher on Route 92.
• Fixed Stone Body so that it absorbs Stealth Rocks on switch-in.
• Fixed heart emoji palette glitch.
• Fixed glitch when whiting out in the last Jace battle that respawned the player at the Pokemon League building.
• Yamask is now a swarm mon on Route 88, Solosis takes its place as a Game Corner prize.
• Changes to I-Hydreigon’s base stats: +10 Atk, -10 SpA
• Fixed a handful of glitches related to wild boss battles.
• Fixed level glitch in Dusknoir battles.
• Fixed various typos and tile errors.

v1.0.4

This update fixes a handful of bugs and makes some progress on restoring sanity to the AI. Also made some movepool adjustments based on player feedback.

• Fixed terrains freezing the game and restored terrains in boss fights.
• It’s now possible to complete the “Diamond in the Rough” sidequest.
• Made some improvements to the AI.
• Genie roamers now try to flee if they can.
• Genie battles now have a unique theme.
• Changed victory theme for Team Genesis trainers.
• Removed victory theme after entity battles.
• Revised the learnsets of some fakemon.
• For balance reasons, Steelix can no longer learn Shield Strike.
• Chespin and its evos can now learn Bullet Seed.
• Popplio and its evos can now learn Dive.
• Reduced Pollenspray’s base power from 60 to 40.
• Fixed Dragon Darts hitting more than twice.
• Fixed a glitched warp in the northern half of Scarlet Woods.
• Fixed a visual bug when using the PC in the player’s room.
• Fixed back sprites for Jumbao and Omendenz.
• Fixed various tile/collision errors.

v0.2.2 Hotfix

• Hotfix for the last update. There was a glitch that would freeze the game when throwing pokeballs on speeds above x1. For now, I’ve changed the catch sequences to always run at normal speed.

v0.2.2

• Added battle speed up to the Options menu (credit to Pokabbie)
• Increased text speed in battle
• R button in battle now flees immediately instead of moving the cursor to ‘RUN’
• The DAZ status now has a 20% chance of wearing off at the end of each turn
• Added new quests to Amber City and Cobalt City
• Berry Master now shows up in Cobalt City every Sunday
• Some improvements to trainer AI and parties
• Fixed glitch with the Houndoom battles near Cinerous Tower, they now always use the player’s first 3 pokemon
• Fixed Jace glitch in Amber City
• Fixed graphics glitch with gate in Cinerous Town
• Fixed various typos and grammar mistakes

v0.2.1

• Revised difficulty + level caps system (see OP in the PokeCommunity thread)
• Increased bag space (this breaks old saves unfortunately)
• DNS color filters for morning and evening now last 2-3x longer
• Added more hidden items to maps
• Added new quests and changed a few old ones (Fists of Steel now gives out TM31)
• I-Wooloo now evolves at level 24 instead of with a Metal Coat
• The grotto in Mt Shiro can now be entered
• The Cut trees in Scarlet Woods can now be cut
• Fixed Jace encounter glitch in Pitchblak City
• Fixed some ice puzzles in MtShiro
• Fixed glitches when battling roughnecks on Route 90
• Fixed glitch causing I-Elgyem and I-Beheeyem sprites to not appear
• Fixed glitch in Mindaro Gardens that would overwrite party Pokemon
• Fixed glitch with some Isshoan forms having the wrong cry
• Fixed glitch with new healing items not working properly
• Fixed Strength battle effect glitch
• Fixed various typos and grammar mistakes
• Fixed various tile and collision errors

v0.2.0

• Added many new maps
• Added option to nickname starter in Hazel’s Lab
• Added weekday-based events
• Added an Unbound-style quest menu
• Added hidden grottos
• HM moves can now be forgotten like ordinary moves
• Pokemon caught in Dream Balls now have their hidden abilities
• Medicine items can now be used repeatedly in the party menu just like in the newer games
• Gym guides now give out fresh water and type gems
• Changes/updates to various NPC teams
• Fixed warp glitch between Meridia/Aurora temples
• Fixed other minor issues with old maps/events

v0.1.2

• Echo type now resists Flying instead of Steel. The type quiz in Xanthos Library has been updated too.
• Fixed difficulty modes not working properly. They should now work as described in the README.
• Fixed level caps not working properly. Pokemon at or above the level cap no longer gain EXP.
• Fixed issues with EXP not being distributed correctly between two or more Pokemon.
• Fixed glitch causing the player to sometimes respawn in the wrong city after whiting out.
• Added PC script to the player’s bedroom.
• First TV swarm is now randomized, previously it was always Gulpin.
• Hazel now gives the player an Exp Share instead of an Itemfinder.
• Increased wild Pokemon levels around Cobalt City.
• The gift Eevee now has its hidden ability.
• Added unique badge icons to the player’s trainer card.
• Fixed Jace/May overworld glitches.
• Fixed glitch causing the player to battle themselves in Cinerous Town
• Fixed nighttime palette glitches in Cobalt City.
• Fixed minor glitch in the May event in Cobalt City.
• Fixed the Strength puzzles in the temples, they were previously unsolvable.
• Fixed minor graphics glitch in Resound’s final turn animation.
• Fixed various typos/grammar.
• Miscellaneous fixes to overworld tile errors.
• Minor updates to trainer AI and movesets.

Known Issues v1.1.1

• EMULATOR SPEEDUP: This has a tendency to glitch the game in unpredictable ways. Use it sparingly and save often if you do.
• BAD EGGS IN PC: This happened to me once (invisible sprite in Box 3) and I’m not sure what caused it. Trying to access its summary screen crashes the game, so avoid that if it happens to you. Everything else in the PC box should still work normally.
• MISSINGNO GLITCH: This sometimes appears when using Cut or Headbutt. It should be harmless as long as you flee immediately. Do not attempt to catch it or interact with it in any other way.
• POKEDEX GLITCH #1: The Pokedex pages for new regional forms don’t show the correct sprites. The player may see the base form or a question mark instead.
• POKEDEX GLITCH #2: Some new Pokemon show the wrong Pokedex page when they’re first caught. Checking the Pokedex after catching them will show the correct page.
• STATUS BAR GLITCH: Enemy status bars sometimes show the wrong color for status conditions. For example, the BRN symbol may be black instead of the correct red color. This is a minor graphics glitch that I haven’t found a fix for yet. It doesn’t affect anything else and it often fixes itself, so just ignore it.
• WINDOWS AT NIGHT: Sometimes these will be strange colors instead of the correct yellow shade. Entering and exiting a building fixes this for now.

Game Related Stuff

Download Pokemon Tourmaline

Previous Version

Screenshots

FAQ

Credits

• pokeemerald – DizzyEgg
• pokeemerald-expansion – rh-hideout
• Porymap – huderlem
• Gen 4 music – CyanSMP64
• DNS graphics – ShinyDragonHunter
• Bag sorting – ghoulslash
• Daily swarm engine – Skeli
• Scrolling multichoice menus – DizzyEgg
• Adding New Weather – Sonikku A
• Add Frostbite status (very helpful for setting up new statuses) – Bassoonian
• Playtesting – various anonymous players