“Pokemon Emerald Rhombus G8” is a Completed GBA Rom Hack made by RHOMBUS99. Explore a new Emerald ROM Hack featuring Gen 1–8 Pokemon, Kaizo-style difficulty, Dragon starters, and Gen 8 mechanics.
Pokemon Emerald Rhombus G8 Completed GBA Rom Hack
- Creator: RHOMBUS99
- Base ROM: Emerald
- Language: English
- Released on: January 21, 2026
- Latest Version: v1.0
- Status: Completed
Also Check Out: Pokemon Water Blue 2
About This Game
Pokemon Emerald Rhombus G8 is a challenging and content-rich ROM hack designed for players looking for a harder Pokemon Emerald experience with more variety and strategic depth.
The hack is inspired by Kaizo-style gameplay, focusing on difficult battles, strong trainers, and meaningful team-building choices rather than excessive grinding. The original Pokémon Emerald map and story remain unchanged, ensuring a familiar experience while significantly increasing difficulty.
Key design goals of the game include:
- Starting the adventure with a Dragon-type Pokémon
- Providing unlimited healing and utility items outside of battle to reduce backtracking
- Disabling item usage during battles to emphasize strategy
- Removing level caps, allowing flexible team-building approaches
- Increasing Gym Leader difficulty, including teams with legendary Pokémon
- Reducing unnecessary grinding against regular trainers
- Offering access to powerful Pokémon and moves without overusing legendaries
- Using maximum Trainer AI settings
- Avoiding the need to rely on HMs like Flash, Strength, or Rock Smash during major difficult areas
The project exists in multiple versions (Gen 1–3, Gen 1–5, and Gen 1–8), with the Gen 1–8 version (G8) being the current public release. Each version includes an encounter guide, while the Gen 1–3 version additionally provides full documentation for trainers, stats, and movepools.
All versions are designed to be very difficult but fair, offering a fresh way to experience Pokémon Emerald with new Pokemon distributions, tougher opponents, and modern mechanics.
This ROM hack is recommended for players who enjoy high-difficulty Pokémon games and want to experience the classic Emerald storyline with significantly enhanced challenge and variety.
Features
- Option to choose between 3 Dragon Pokémon at the start of the game
- All evolve at Level 30 and Level 50
- Pokémon from Gen 1 to Gen 8 available (around 95% of them)
- No items usable during battle, except held items
- Infinite Master Balls, Full Restore, Max Revive, Max Elixir available at Oldale Town PokéMart
- All Gym Leaders have 6 Pokémon
- Slightly altered movepools:
- Player does not have access to weather-changing moves (Sunny Day, Rain Dance, Sandstorm)
- No setup moves like Calm Mind, Bulk Up, etc.
- Gym Leaders and some trainers have Mega Evolution Pokémon
- Mega Evolution is not available to the player (part of the difficulty)
- Evolution stones available in Mauville City
- Harbor Mail for the Mauville Lady (Coin Case) available at Lilycove City Mart
- A new difficult Rival added throughout the game (you can’t miss him)
- Custom weather in some Gyms
- Since there is no map change, there is no known bug
- No need to learn Flash or Strength if you don’t want to
- Cut and Rock Smash required only for a few hours
- Rock Smash and Strength removed from Victory Road and Underwater Team Aqua Cave
Evolution Changes (Trade Evolutions Removed)
All Pokémon that normally require trading now evolve by level or stone. Examples:
- Espeon → Sun Stone
- Umbreon → Moon Stone
- Sylveon → Level 30
- Machoke → Machamp at Level 50
- Kadabra → Alakazam at Level 50
- Haunter → Gengar at Level 50
- Seadra → Kingdra at Level 50
- Electabuzz → Electivire at Level 50
- Feebas → Milotic at Level 30
Additional Gameplay Notes
- Uses Gen 8 mechanics
- Proteins, Carbos, etc. do not work, but can be sold
- Most Legendary Pokémon can be found at Level 30 in Victory Road to help with the Elite Four
- Cheap Rare Candy available before the Elite Four
Game Progress
Pokemon Emerald Rhombus G8 Version 1.0 is a complete game. The full Pokemon Emerald story, featuring a roster of Pokemon from Generations 1 to 8 and a challenging Elite Four, is finished and playable from start to finish.
Documentation
The game file also contains the documentation; you just need to extract the file after downloading to get the docs.
Download Pokemon Emerald Rhombus G8
Note: Currently only the G8 (gen 1 to 8) version is released for now and we’ll see how it goes from here.
Screenshots




Credits
RHOMBUS99 (Creator)

what’s the use of mega stone if you can’t mega evolve your pokemon