Pokémon Emerald Imperium is a non-profit, fan-made Game Boy Advance ROM hack created by iriv24, based on Pokémon Emerald and inspired by Pokémon Radical Red. Released in January 2025, it offers a more challenging take on the Hoenn adventure, with a broad range of Pokémon and modern gameplay features. The game includes nearly all Pokémon from Generations 1 through 9, 27 starter choices, Mega Evolutions, Sinnoh characters and Gym Leaders, and more than 100 optional and route-based mini-boss battles.

Players can choose between Easy and Normal difficulty, use an in-game randomizer, and decide whether Pokémon follow them. Quality-of-life improvements include reusable TMs, HMs that do not need to be taught, remote PC access, toggleable running and Repel effects, and built-in cheat codes. The project provides downloadable game files along with resources such as a walkthrough, documentation, cheat codes, feature guides, and installation instructions.

It is designed to run through a GBA emulator on Android, Windows, Mac, and Linux. The latest version listed on the site is 1. 3.

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