Pokemon Emerald Imperium

Download Pre-Patched Pokemon Emerald Imperium GBA ROM Hack

• Creator: iriv24 
• Version: 1.1
• Hack of: Emerald
• Updated: January 28, 2025
• Language: English
• Status: Completed

Pokemon Emerald Imperium is a GBA Rom Hack by iriv24 based on Pokemon Emerald in English. It was last updated on January 28, 2025, and is now available to download.

Description

Pokémon Emerald Imperium is a challenging, quality-of-life-focused ROM hack of Pokémon Emerald. Version 1.1 is now fully released, offering a complete experience from the beginning to the Champion battle, with additional post-game content. Inspired by Pokémon Radical Red, this hack enhances gameplay mechanics, trainer battles, and overall balance while staying true to Hoenn’s core adventure.

While not directly affiliated with Radical Red, Emerald Imperium incorporates many of its most acclaimed features, including:

• Updated abilities, stats, and movepools
• Adjusted type interactions and evolution methods
• A redesigned difficulty curve for a more engaging challenge

Designed for difficulty hack enthusiasts and Nuzlockers, Pokémon Emerald Imperium delivers intense, strategic gameplay while preserving the nostalgic charm of the original Pokémon Emerald.

Are you ready to take on Hoenn like never before?

Features

• Expanded Pokédex – Nearly all Pokémon from Generations 1–9 are available (some Legendaries still need to be added).
• Enhanced Battle Engine – Features modern mechanics, improved AI, and various quality-of-life upgrades.
• Minimal Grinding Mode (MGM) – A configurable mode to reduce grind while keeping battles challenging (details below).
• Difficulty Modes – Includes Easy and Normal modes, with potential for more if there’s interest.
• Built-in Randomizer – Customizable species and ability randomization options.
• Level Caps – Prevents over-leveling past important battles.
• Mega Evolution – Includes new custom Megas for Pokémon like Gen 4 starters and converted Gigantamax forms.
• New Characters & Battles – Features Gen 4 Gym Leaders, Dawn as an additional rival, and over 100+ boss battles, including Mini-Bosses, Gym Leaders, Rivals, Elite 4, and Team Aqua/Magma.
• DexNav – Improved encounter tracking and Pokémon searching.
• Following Pokémon – Can be toggled on/off.
• Gen 5 UI Updates – Features Gen 5-style party menu and Pokémon summary screens.
• EVs & IVs Displayed – Viewable in the Pokémon summary screen.
• Type Icons in Battle – Quick reference for Pokémon typings.
• Move Power Calculator – Displays real-time move damage info in battles.
• Sleep Clause – Limits sleep-inducing moves to balance competitive battles.
• HG/SS-Style Pokédex – Improved navigation and tracking.
• Form-Change Features
  • Key Items for Rotom, Genies, Shaymin, and Hoopa.
  • NPCs to change Silvally and Genesect’s forms (still requires their held items).
• Cheat Code System – Various cheats available (documented in-game).
• Gen 4 Music – Includes select tracks for added nostalgia.
• Balance Updates from Radical Red – Pokémon stats, abilities, typings, and learnsets match Radical Red where applicable. Differences are documented, and the hack is compatible with Radical Red’s damage calculator.
• Story Tweaks – Minor adjustments to align with difficulty balancing.
• Post-Game Legendary Events – Includes access to Mystery Gift locations from vanilla Emerald.

Quality of Life Improvements

• Not needing to teach HMs to use them, and they are forgettable if taught
• Reusable TMs
• Held Items are restored after battles
• Expanded Bag pocket size, added Mega Stones pocket
• Bag sorting by Name and by Amount per pocket
• Capability to register multiple Key Items
• PokeVial with infinite uses to heal your party from anywhere
• Access to the PC from anywhere
• Time changer
• Stat Editor (for EVs and IVs) given in Mauville
• IV Perfecter NPC in Mauville
• Hidden Power type changer NPC in Mauville
• Toggleable Infinite Repel
• Toggleable Auto Run
• Hold R to speed through NPC dialogue
• Option to rename a Pokemon in the party menu
• Option to relearn level-up moves and egg-moves for a Pokemon in the party menu
• Move Pokemon around in the party menu more easily with the Select button or the R button
• Move-tutor moves converted to TMs so they can be taught anywhere, no more move tutors in-game
• Item care packages
  • Includes Infinite Candy, type-boosting Hold Items, type-resisting Berries, plus many more
• Ability Capsules and Ability Patches to easily change between abilities for a Pokemon
• In every Pokemon Center, a 2nd Nurse has been added who can:
  • Change Pokemon’s natures
  • Swap genders for Pokemon with gender-specific evolutions
  • Set Pokemon directly to the Level Cap
• “Quick throw” option for Poké Balls in battle
  • Can scroll through options easily by holding the L button

Minimal Grinding Mode

With MGM on, all Pokémon have perfect IVs, and EVs are disabled for both players and NPCs. With MGM off, IVs are random, EVs can be gained, and you still have tools to customize IVs and EVs instantly. NPC trainers will always have perfect IVs and be EV-trained.

Difficulty Modes

• Normal – The intended difficulty. Boss fights are tough, Bag use is disabled in trainer battles, and battle style is Set.
• Easy – Still harder than a regular Pokémon game but easier than Normal mode. Boss Pokémon are 2 levels lower, Bag use is allowed, and battle style defaults to Set but can be changed to Shift.

Randomizer

Available in-game with three options:

• Fully Random – Every Pokémon is completely randomized.
• Scaled Random – Pokémon are randomized into others with similar base stats.
• Legendary-Aware Random – Randomized, but Legendaries only swap with other Legendaries.
  Boss trainers’ Pokémon stay the same.
  Ability randomization is also available and works separately from species randomization.

Stat Editor, IV Perfecter NPC, and Hidden Power Changer

In Minimal Grinding Mode:

• IV Perfecter NPC is disabled since all Pokémon already have perfect IVs.
• Stat Editor can freely change IVs but not EVs.
• Hidden Power type can be changed freely.

NOT in Minimal Grinding Mode:

• IV Perfecter NPC: You can perfect the IVs of 5 Pokémon per Gym Badge. After all 8 Badges, you can use it freely.
• Stat Editor: You can edit EVs freely. IVs can only be changed for Pokémon that have been perfected by the IV Perfecter NPC.
• Hidden Power Changer: Can only change the type for Pokémon with perfected IVs.

IMPORTANT

Avoid using VBA or MyBoy, as they can cause visual glitches and crashes. For the best experience, use mGBA on PC and PizzaBoy, Lemuroid, or RetroArch (with the mGBA Core) on mobile.

Screenshots

Useful Stuff

Downloads

Credits and Special Thanks

iriv24 (Creator)

The full credits can be found here 

• pret, for the pokeemerald decomp
• RHH, for the pokeemerald-expansion hack base
• The Team Aqua’s Hideout Crew, for everything 🙂
• Pokemon Radical Red and its developers, for being the inspiration for this game and for the ideas behind the majority of the balance changes made in this game