Pokemon Yume

Download Pre-Patched Pokemon Yume GBC ROM Hack

• Creator: PokéfanMarcel 
• Version: 1.1
• Hack of: Red
• Updated: August 23, 2025
• Language: English
• Status: Completed (will still get updates)

Pokemon Yume is a GBC ROM Hack by PokéfanMarcel  based on Pokemon Red in English. It was last updated on August 23, 2025, and is now available to download.

Description

Pokémon Yume 夢 is an enhancement hack of Pokémon Red and Blue built on the pokered disassembly. It enriches the originals with improved gameplay balance, greater Pokémon accessibility, and carefully integrated additions that feel like they were always part of the game. Above all, it preserves the charm and spirit of the classics.

夢 (Yume), meaning dream, represents a return to Kanto where memory and reimagination merge. Loosely inspired by the anime, manga, and later Pokémon generations, Yume offers expanded storylines, new areas, and subtle cultural details that highlight the games’ Japanese roots.

Features

• Catch ’em all! All original 151 Pokémon are available through natural gameplay.
• Play as Red or Green. Adventure as a girl or a boy.
• Revisit Kanto. Explore new areas like the Cinnabar Volcano, the Saffron Pokémon Academy, Celadon Grove… and even an all-new Mandarin Island!
• Expanded Postgame. New quests, Elite Four rematches, Gen 2 tie-ins, a restored Prof. Oak battle, and more!
• Mew quest. A proper storyline leading to the Mythical Pokémon.
• Quality-of-life improvements. Running shoes, bigger bag space, easier HM usage, experience bars, repel reuse prompts, a move deleter, and much more.

New Content

Maps

• New zones such as Mandarin Island, Cinnabar Volcano, Saffron Pokémon Academy, Mt. Moon Square, and Celadon Grove.
• Citrus ferries from Vermilion to Mandarin Island.
• Refurbished Pokécenters with modern layouts and sleeker designs.
• New Celadon Mart floor selling PP-related items in the postgame.
• Updated mechanics and graphics for the Power Plant.

Story

• Postgame quests for each Elite Four member to unlock rematches.
• Hidden location and adversary unlocked after battling Professor Oak.
• New Cinnabar Mansion secrets leading to Mew.
• Extra dialogue integrated into old and new locations.

Visuals

• Updated graphics and new animations for several maps.
• Unique sprites for Gym Leaders.
• New player sprites for surfing and running.
• Adjusted town color palettes in Super Game Boy mode to match original Japanese names.
• Restored Gym Leader names on trainer cards.
• Numerous visual bug fixes.

QoL Updates

• Run by pressing B.
• Use Cut, Surf, Strength, and Flash by pressing A on the overworld.
• HMs and field moves no longer require replacing a move slot.
• All TMs purchasable at Celadon Mart, with new ones unlocked after each badge.
• Expanded bag space to 30 item slots, plus a dedicated key item pocket.
• Assign key items to the Select button.
• Repel reuse prompt after it expires.
• Trade evolutions now possible via new dedicated NPCs.
• Move Deleter and Move Reminder in Fuchsia.
• Battle experience bar and improved move info box.
• B in wild battles shortcuts to “Run.”
• Toggle Exp. All from the bag.
• Faster coin buying at Game Corner.
• New nurse room in SS Anne.
• Base stats viewable in the Pokédex.
• Pokémon Academy unlocks DV and Stat.Exp viewing.
• Poké Beeper alerts when your box is nearly full.
• Many smaller tweaks and additions.

Note: Link cable features are untested. Use at your own risk.

Gameplay Updates

Moves

• Several moves reworked to improve viability while keeping the original feel. Three moves from later generations added.
• Consult the complete list of move changes for more info!
• Ghost is now a Special type, and Dragon is now a Physical type.
• Fixed Focus Energy and Dire Hit so they now correctly quadruple critical hit rate instead of lowering it.

Learnsets

• Pokémon learnsets updated to give more options while keeping Gen 1 authenticity.
• The new learnsets can be consulted in this file.
• Stone and trade evolutions can continue learning moves.

Battles

• Updated type match-ups: Ghost is super effective against Psychic, and Bug is not very effective against Poison.
• Fixed badge boost glitch and the Leech Seed/Toxic exploit.
• Gym Leaders’ and Elite Four members’ Pokémon now have better movesets.
• Some Gym Leader teams slightly adjusted while keeping their core theme.
• Rival now has a more varied team that reflects his storyline.
• New trainers added to both new and existing areas, including some from the anime.
• Gym Leader and Elite Four rematches with stronger teams and movesets.
• New Battle Hall with random 3v3 battles.

Wild Encounters

• Wild Pokémon encounters reworked to increase variety and make more species available earlier.
• For full details (spoilers!), see the files for wild encounters on each map and their probabilities.
• All fishing rods are obtainable earlier than in the original games.
• Fishing encounters completely redesigned for levels and diversity.
• For full details (spoilers!), see the files for the Old rod, Good rod and Super rod.
• Pokédex “Area” feature now shows Land, Surf, and Fishing encounters separately.
• New NPC gives you the Mt. Moon fossil you did not choose.
• Either Hitmonlee or Hitmonchan can be obtained from a new NPC before the Elite Four.

Version Differences

The differences between versions are small.

• Version-exclusive Pokémon are now handled through rarity instead of complete exclusivity. For example, Oddish is more common in Red, while Bellsprout is more common in Green/Blue. Green version shares the same encounter tables as Blue.
• Other original differences remain:
  • Game Boy Color palettes: Red/Green for Red, Green/Red for Green, Blue/Red for Blue.
  • Game Corner slots: Different visual designs.
  • Super Game Boy: Different border graphics.

Unless you want an easier hunt for a specific version-exclusive Pokémon, you can just pick whichever color you prefer.

Screenshots

Downloads

Mirrors

Credits

PokefanMarcel (Creator)

This project owes a lot to existing works, and above all to the pret pokered disassemby project, but also:

• Shinpokered: initial inspiration, including the kanji name; girl player, experience bar, temporary field moves, many bug fixes,
• PureRGB: overworld HM use, ROM space management, repel reuse prompt, use items with Select, several Volcano and Power plant graphics, many other code snippets,
• Extreme Yellow: overworld HM use, dynamic TM seller,
• Yellow Legacy: inspiration for many balance changes,
• pokered-crysaudio: updated sound engine,
• Polished Crystal: math functions, some gfx,
• some new sprites have been provided by or adapted from Madame Frog/Hatuntun (retrieved here), LouLilie (here), Corra, Mauve and FrenchOrange (from the pokered discord), SkidMarc25 (here),
• the invaluable help from the amazing people on the pokered Discord.