Pokemon Extreme Yellow (GBC ROM) Download

Download Pokemon Extreme Yellow GBC ROM Hack

Creator: Rainbow Metal Pigeon
Version: 1.2
Hack of: Yellow
Updated: October 5, 2024
Language: English
Status: close to completion, but still work-in-progress

Kanto at its Max (and Beyond!)

Pokémon Extreme Yellow is a challenging ROM hack of the classic Pokémon Yellow that takes the original game to a whole new level. Players will face significantly tougher battles, requiring more strategy and skill to progress. The game also features intricately designed dungeons, offering a more complex and immersive experience.

In addition, previously removed or unfinished content has been restored, enriching the game’s lore and backstory with deeper, more elaborated, and darker narrative elements.

The hack introduces completely new areas to explore and story arcs that expand upon the original plot, giving players fresh adventures to embark on. After completing the main story, the game offers virtually infinite post-game content, ensuring that players always have new challenges to tackle.

Additionally, Pokémon Extreme Yellow includes a vast array of customization and randomization options, allowing players to tailor their gameplay experience to their preferences.

This enhanced version of Pokémon Yellow provides a richly detailed and complex journey, designed to challenge even the most experienced Pokémon fans while delivering an engaging and fresh experience through new features and expanded content.

Features/Changes

The driving principle of Extreme Yellow is to provide “Kanto at its max (and beyond!)”:

all Pokémon-related to the original 151 via evolution, so pre-evo, evo, branched evo, etc (this comes with the introduction of the post-gen-1 types) for a grand total of beyond 200! This includes some surprises! More info to come!
wider movepool with moves from more recent generations
higher difficulty: all “named” trainers have a full team, with max Stats and DVs
various new locations, including two new cities, secret areas, new buildings, etc
two new story arches taking place in the middle of the main canon story
multiple optional subquests
selected trainers engage in Inverse Battles
possibility to complete a Living Dex via enhancement of the encounter tables
new items, like Heavy Ball and Fast Ball
revisited and expanded the backstory and psychology of the main characters
vast (virtually infinite) and challenging postgame, including rematches, new areas, new trainers, and more
non-binary gender selection
a plethora of QoL: improved move info box; improved Safari Zone experience; options for regulating level scaling, badge boost, and exp gaining; modern-like usage of field moves; portable PC, etc
enhanced interaction with Pikachu: friendship plays a pivotal role and a new custom overworld Fly animation
many Easter Eggs, references, and optional secrets

Screenshots

Also worth trying: Pokemon Cope Version

More changes (WARNING! CONTAINS SPOILERS!)

Mega Evolution appears as permanent evolution in Extreme Yellow
The Legendary Birds are unlocked after completing three special subquests
An NPC that appears randomly in any city after besting the League, and is in search of the final member of their ultimate interdimensional team
The author themself (yes, me!) makes an appearance as a fightable post-League boss
So-long-sought super fusion Venustoise is finally catchable
Celadon Hotel has available rooms
a whole new location, the Lunar Temple, will play a key role in the main plot
Mt. Moon has been expanded to be part again of the main plot with a new, much harder maze
Stater Pikachu obedience is based on happiness rather than level and number of badges, and at high happiness it will gain extra power
A Light Ball is hidden in the region, doubling the damage of the Starter Pikachu
Pikachu can Surf and Fly, and it has custom animations and sprites
Possibility to surrender in trainer battles
Multiple rumors and urban legends have been merged to create the ultimate end-game maze…

Changelog v1.2 – What’s New!

Fixed a bug that prevented Inverse Battles from being reset upon losing

Important

If you are using a savefile from V1.0, make sure to NOT save in Rival’s House NOR on Route 4.

Known Glitches

All of these are glitches I am aware of, that I want to fix but they are quite tough to deal with and cause no harm whatsoever to the gameplay:

the intro page of the surfing minigame has a random unwanted tile
after playing the surfing minigame, the surf enthusiast disappears. It re-appears upon exiting and re-entering the building
when using the Portable PC, some tiles may be glitched, specifically the one representing the level of the Pokémon
while using the Item Randomization option, the TMs available in the Marts will not correspond to the ones you picked up

Useful Stuff

Discord

Downloads

Mediafire

Mega

Previous Versions

v1.0

Credits (WARNING! CONTAINS SPOILERS!)

Rainbow Metal Pigeon (Creator)

pret (Pokémon Reverse Engineer Team) first and foremost, as they enabled me to work on this project in the first place
Vortiene, for their invaluable help, suggestions, teaching, and support over the months; this game would have likely never seen the light of day without their help (their contributions include, but are definitely not limited to: code to give trainers’ Pokémon Stat Exp; code to have the elevators’ wirring depend on the number of traveled floors; code to expand the number of hideable sprites; code to allow instant re-usage of Repellent; directions on how to free needed memory; too many to be counted times when they taught me about assembly, Game Boy architecture, and RBY framework)
jojobear13, for their precious technical insights and open-source bug fixes (the code to give trainers’ Pokémon Stat Exp was originally developed by them; they provided fundamental insights on a pesky TM-related bug; they implemented a new and better RNG)
Porygondolier, not only for being a very pleasant and interesting person to interact with but also for working with me on the mid-battle evolution (admittedly, they did most of the job!)
Sanqui, for granting usage on the gen1-style sprites used in their Pokémon Red randomizer; all sprites that are not the original 151, Kleavor, Annihilape, Mega Evolutions, Anomalies*, MissingNo, or taken from Gold/Silver, are taken from their project; detailed credits to single artists can be found on their website
Plague Von Karma, for some suggestions on speed-ups, providing the move deleter/relearner code (which uses code from jojobear13, based on Mateo’s code), as well as Kleavor and Annihilape sprites (I modified the latter)
FrenchOrange, mauvesea, and LJSTAR, for their many many improvements and fixes on the sprites I drew; FrenchOrange drew the Flying Pikachu sprite
Xillicis, for their tutorial on how to increase the number of usable Pokémon, as well as many useful exchanges over the months, and for some back sprites: Electivire, Tangrowth, Rhyperior, Lickilicky, Magnezone, Porygon-Z, Magmortar
ZetaPhoenix, for the TM name displayer code
BlueZangoose, Mord, and Cram-O-Dev for having helped, supported, and motivated me and just being great people during this adventure of mine
Mega Evolution, Eternamax Eternatus, Arceus, and Venustoise sprites are my own production, bar the aforementioned help
Mega Rayquaza and Zygarde Complete sprites are from Axel-Comics: https://www.deviantart.com/axel-comics
Ultra Necrozma sprite is from SageDeoxys: https://www.deviantart.com/sagedeoxys
Pokémon overworld sprites that are not from the original Green/Blue/Yellow are from Crystal Clear via the help of FrenchOrange
Overworld sprites of the gym leaders are from: Brock: Vortiene; Misty: Vortiene; Lt Surge: Mord; Erika: Mord; Koga: Game Freak (Gold/Silver); Sabrina: Vortiene; Blaine: Game Freak (Gold/Silver); Giovanni: Game Freak (Green/Blue)
Green sprites are from Ghost-MissingNo: https://www.deviantart.com/ghost-missingno/art/Blue-Sprites-for-R-G-B-Y-339796334
Yellow sprites are from LouLilie: https://www.deviantart.com/loulilie/art/PokemonSpecial-Sprites-Yellow-302559354
overworld non-vanilla sprites (legendary birds, Slowking, etc) are from Crystal Clear
Game Freak, Creatures Inc., Nintendo, and TPCI for creating Pokémon
PLEASE CONTACT ME (Rainbow Metal Pigeon) if I forgot to add your name for anything of yours that I have used!!! In which case I first apologize, and then I’ll put a remedy as soon as possible!