Pokemon Tourmaline

Pokemon Tourmaline GBA

Download Pre-Patched Pokemon Tourmaline GBA ROM Hack

  • Creator: tdilos
  • Version: 1.0.0
  • Hack of: Emerald
  • Updated: October 3, 2025
  • Language: English
  • Status: Completed. [Playable up to the Hall of Fame + some minor postgame content.]

Pokemon Tourmaline is a GBA ROM Hack by tdilos based on Pokemon Emerald in English. And it is now available to download. It was last updated on October 3, 2025.

Also, be sure to check out Pokemon Ice Blue

Description

Pokémon Tourmaline is a loose sequel to Pokémon Emerald. This game is intended to take place in an alternate timeline where the setting and events diverge from the official games. Most notably, some mechanics from later gens are absent, others have been reworked, and several new mechanics have been introduced (see below for more information).

Story

It has been several years since the battle between Groudon and Kyogre wreaked havoc on the Hoenn region. As more information about Pokémon’s origins becomes available, humanity’s understanding of the game grows. A recent surge of discoveries in the nearby Issho region has attracted researchers from all over the world, including May, who is now an assistant Pokémon professor. After receiving a Pokémon from her, the player sets out to investigate reports of new Pokémon species and types from all over the Issho region, as well as other strange phenomena. Meanwhile, a new threat is emerging in Issho, a mysterious crime syndicate that employs extremely powerful Pokémon.

Features

  • Original story, characters, and region
  • Return of many old characters
  • A custom regional Pokédex with 386 Pokémon
  • 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 Pokémon, 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

Creator Note

Message the creator (tdilos) on pokecommunity or on the discord if you have any questions, comments, or feedback.

Change Log – What’s NEW in v1.0!

Screenshots

Pokemon Tourmaline GBA

Useful Stuff

Downloads

Previous Versions

Known Issues

  • Emulator Speedup: Can cause unpredictable glitches. Use sparingly and save often.
  • Double Battle Glitch: After a double battle (e.g., Twins), wild battles may behave like double battles, sending out two Pokémon. Catching Pokémon works normally, and fighting a single trainer fixes the issue. This glitch does not occur after double battles against two separate trainers.
  • Pokédex Glitch: New regional forms may show incorrect sprites, displaying the base form instead.
  • Status Bar Glitch: Enemy status bars may display incorrect colors for status conditions. This is a minor graphical issue and often resolves itself.
  • Cinerous Town Glitch: The gate at the top of the map may use the wrong tileset. Entering and exiting a building temporarily fixes it.
  • Doors: Some doors change color when entered. Proper animations will be added in a future update.
  • Windows at Night: Sometimes display incorrect colors. Entering and exiting a building usually fixes it.
  • Music Issues: Some Gen 4 tracks may not have enough sound channels, leading to partial playback. All tracks are still listenable.

Credits

tdilos (Creator)

  • 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

Unreasonably gorgeous admin of PokeHarbor