Pokemon Emerald Imperium

Pokemon Emerald Imperium is a GBA Rom Hack by iriv24 based on Pokemon Emerald in English. It was last updated on September 4, 2025, and is now available to download.

• ▸ Almost all Pokemon from Gens 1 – 9 are available (still need to add some Legendaries)
• ▸ Vastly improved battle engine with modern mechanics and much smarter AI
• ▸ Configurable Minimal Grinding Mode (MGM, described later)
• ▸ Built-in Difficulty Modes: Easy and Normal for now, would definitely be open to adding more options if there is interest (described later)
• ▸ Built-in Randomizer with configurable species and ability randomization (described later)
• ▸ Built-in Level Caps
• ▸ Mega Evolution New custom Megas have been added for several Pokemon, including Gen 4 starters, and several Gigantamax forms converted to Megas
• ▸ Several Gen 4 characters have been added, including Dawn as an additional rival, all the Gym Leaders (only Roark is a required battle), and more!
• ▸ DexNav
• ▸ Toggleable following Pokemon
• ▸ Gen 5 style party menu and Pokemon summary screen Includes built-in functionality to view EVs and IVs
• ▸ Type icons displayed in battle
• ▸ Move power calculator in battle
• ▸ Sleep Clause
• ▸ Heart Gold / Soul Silver style Pokedex
• ▸ Form-changing Key Items for Rotom, Genies, Shaymin, and Hoopa
• ▸ Form-changing NPC scripts for Silvally and Genesect (still requires their held items)
• ▸ Cheat code system (available cheats listed in documentation)
• ▸ Increased difficulty of trainer battles, with a focus on Gym Leaders/Elite 4, Rivals, Team Aqua/Magma battles, route Mini-Bosses, and optional Mini-Bosses (over 100 of these battles in total!)
• ▸ Several additional optional Boss Trainer battles (with hopefully good enough rewards to incentivize the player to actually want to do the battles!)
• ▸ Some music from Gen 4
• ▸ Balance updates for Pokemon to match Radical Red, which includes type-changes, stat updates, ability updates, learnset updates, etc. Differences from the RR balance changes are explicitly noted in the documentation, but the goal for this was to be able to match the data on https://dex.radicalred.net/ and to be able to reuse the damage calculator at https://calc.radicalred.net/.
• ▸ Some fairly small story tweaks, mostly with the goal of lining up difficult battles
• ▸ Post-game Legendary events including access to Mystery Gift locations from vanilla Emerald