Pokémon Eon Emerald

By valenti33

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PlatformGBA

Authorvalenti33

PostedFebruary 24, 2026

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Game Description

It is a comprehensive ROM hack designed to be the "definitive" Generation 3 Hoenn experience, blending modern enhancements with a vanilla feel. This hack focuses heavily on quality-of-life improvements and post-game content, allowing you to play the classic Emerald story while having access to nearly all Gen 3 Pokémon. It features a fully updated battle engine, including the Physical/Special split, alongside seamless save file and PKHeX compatibility. With numerous balance changes, new items, and a wealth of hidden details to discover, this is the perfect game for players who want a modernized, feature-rich Hoenn adventure that still feels authentically Gen 3.

Original Creator

Visit Source / Author Website

https://github.com/ValentMi/EonEmerald

Project Version 1.0.0 (Completed) - 29/01/2026 - This is a complete game. The full Hoenn story, with enhanced features and QoL, is finished and playable from start to finish. Post-game content (like E4 rematches and Battle Frontier sets) is a work in progress, with further updates planned.

Key Features

Definitive Gen 3 Hoenn ExperienceThe game's core goal is to provide a unique, modern experience that still feels authentically vanilla Gen 3, showcasing all the content the generation has to offer.

100% Save & PKHeX CompatibilityA high priority is given to ensuring seamless compatibility with vanilla Pokémon Emerald save files and PKHeX for easy Pokémon management.

Extensive Quality of Life (QoL) ImprovementsIncludes a massive number of features to streamline gameplay

Modern Battle Mechanics & AbilitiesIncludes the Physical/Special Split, updated move categories (e.g., Ghost moves are special, Dragon and Dark moves are physical), and updated abilities (e.g., Plus/Minus is buffed).

Rebalanced & Enhanced PokémonMany Pokémon have rebalanced BSTs, types, abilities, and movepools to increase their viability.

Streamlined HM UsageHMs (Cut, Flash, Strength, Rock Smash, Waterfall, Dive) are usable directly from the Pokémon menu/scripts without needing to be taught.

Increased Difficulty (Vanilla+)The game aims for a difficulty level slightly harder than vanilla Emerald but not excessively challenging.

Level ScalingImportant trainers' levels dynamically scale by your party's average level (toggleable).

New Items & Item LocationsIncludes new items (like Absorb Bulb, Air Balloon, Cell Battery, Choice Scarf, Choice Specs, Life Orb) and new locations for existing items.

Post-Game ContentDesigned around adding more post-game content to Emerald, including a Battle Pyramid revamp and challenges.

Bug FixesNumerous minor graphics, text, and script bugs have been fixed.

Kanto/Johto Pokémon ObtainableAll breedable Pokémon can be obtained (implied through gifts in Lava Dome and Battle Frontier rewards).

Repel SystemFunctions like the BW2 repel system.

EV Cap at 252EVs are capped at 252 per stat (instead of 255).

Nature Affects StatsNatures now properly affect stats, and EV reducing berries are obtainable.

IVs Treated as 0 in BattleFor both player and trainers, all IVs are treated as 0 in battle.

Synchronize 100% EffectiveSynchronize has a 100% chance to find a specific nature when in the lead spot.

Elemental Hyper BeamsUpdated mechanics for elemental Hyper Beams via level-up.

Electric Pokémon Immune to ParalysisElectric-type Pokémon cannot be paralyzed.

Poison Types Increased Toxic AccuracyPoison-type moves have increased toxic accuracy.

Hidden Item MechanicsAllows for finding hidden items.