Pokemon Elastic Emerald ROM

Pokemon Elastic Emerald is a GBA ROM Hack by zenmodeman based on Pokemon Emerald. It was last updated on November 30, 2025.

Description

Pokemon Elastic Emerald is a romhack that gives the player monotype options, and it’s a game driven towards utilizing the game mechanics of Pokemon. Pokemon have been given buffs, but most buffs tend to be quite tame.

Features

• Monotype Pokemon
• The player’s PC has several items to bootstrap the experience. 
• Move relearning can be accessed from the party menu.
• Pokemon can be encountered in trees by interacting with them
• The Pokedex contains expanded Pokemon information, such as level-up moves.
• New Locations
• The gen 9 catch rate boost to low-level Pokemon (below level 13) is in effect
• Gym Leaders now have the option to be battled in either Single or Double battles.

Changelog

V0.2.0

• Replaced the following trainer moves: Youngster James’ Impidimp’s Draining Kiss with Confusion (and accordingly, gave Impidimp Confusion as an egg move); Cooltrainer Aurelio’s Clefairy’s Charge Beam with Echoed Voice; Collector Darren’s Jigglypuff’s Skull Bash with Secret Power.
• Added some items to the player’s starting PC: added 12 Serious Mints, 2 Persim berries, and raised the count of Plain bottle caps to 24.
• Changed the Route 104 White Herb florist to appear after 1 badge instead of 3.
• Added a new option at the start of the game for a Tiered System.
• Programatically increased the level of Cindy rematches based on badges.
• Implemented Anticipation buff for a Solid Rock-like damage reduction that interacts better with Quad-effectives.
• Improved bite chances for Old and Good rod, and made the minigame of fish getting way more lenient.
• Changed Rustboro City trade to only happen in non-monotype. For Monotypes, changed the NPC to only have ordinary dialogue.
• Fixed bug with Rival blocking the door to their house after getting the starter from Birch.
• Added Astral Charge (+1 Sp.Atk when hit by Psychic and Fairy moves).
• Converted trade item evolutions into use-item evolutions (akin to Stones). Added progression guards for Stone-like evolutions in Restricted Mode, and a special PartyMenu message for evolution items that are compatible but “Not Ready” (i.e. doesn’t meet Restricted Mode level requirements for evolution).
• Added AI logic for applying simulated stat changes when factoring moves such as Coaching.
• Made Water Sport, Mud Sport, and Mist priority moves.
• Implemented Metal Rush, a Steel-type move with a bonus effect depending on the user’s weight.
• AI can now pre-calculate Tera damage defensively, rather than just offensively.
• Add Dedicated — ability that extends the duration of field moves.
• Added Delibird’s Signature Ability Merry.
• Made overworld Sweet Scent have a 50% chance to cause a double battle until leaving the area.
• Implemented Illuminate Redirection.
• Resolved issue with hidden STAB moves no longer being calculated, likely due to some structural change from an expansion merge.
• Fixed bug with Tech tutor depleting the number of remaining Center Move Tutor counter (in Resource Mode).

V0.1.2.1

• Double Battle AI adjustments: more robust targeting under KOs, and AI mon places bias on number of hits to kill between two player targets.
• Illuminate now causes “Illuminating” moves to apply the Follow Me effect on the user.
• Tailwind causes Razor Wind to resolve in one turn.
• Made Mail be unswappable by Trick or Switcheroo. Adjusted Trick AI to be disincentivized against Mail.
• Aurelio tweaks: added text for Aurelio when saying no to the Battle; set Aurelio to heal before the fight; fixed minor issue where Aurelio only faced the player the first time he was talked to.
• Patched up encounter bug that made slot index 3 unreasonably weighted.
• Removed Affection mechanics that were being applied.
• The menu system for viewing IVs and EVs has changed, now pressing A in the stats screen.
• Swapped Venonat trainer’s Zoom Lens for Wide Lens
• Removed some text that wasn’t supposed to be there for Level Cap info inside the Truck at the beginning of the game.
• Did a big merge with Pokeemerald-expansion, which could potentially cause unknown regression issues (none identified so far).

V0.1.2

• This release finalizes pre-Dewford to a playable state.

Useful Links

Documentation

Reddit

Github