
Pokemon Mercury (Azoth)
Explore a reworked Johto in this FireRed hack, with side quests, visible encounters and a separate English beta translation.
English beta-29 updated:
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Pokemon GBA ROM hacks change games made for the Game Boy Advance. They can introduce new regions, revise battles or change how a familiar game is played. A platform tells you the hardware family; the base game tells you which original game the project modifies.
2 games in this category
Explore a reworked Johto in this FireRed hack, with side quests, visible encounters and a separate English beta translation.
English beta-29 updated:

Explore the untamed Athanto Region in this completed English Emerald hack, with new and returning Pokemon, coat variations and sidequests.
Released:
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FireRed and Emerald both belong to the Game Boy Advance family, but their hacks can offer very different experiences. The platform badge identifies the hardware family. The base-game badge identifies the original game a project modifies; it is the detail to check against the creator's patch instructions.
A GBA hack can change the story and region as well as battles and progression. Compare the premise, difficulty options and side activities described on a game page. A familiar base game does not mean the hack follows the same journey or offers the same battle rules.
Open a game page to compare features, see actual gameplay screenshots and read release caveats. Check the version and documentation together. A platform match alone does not establish compatibility with a particular original-game revision.