Pokemon Emerald ++

Pokemon Emerald Plus Plus is my (mynameisPooky) first-ever ROM hack based on the Pokeemerald decompilation. I’m incredibly grateful to everyone who has contributed to both the decomp and the expansion, as I couldn’t have done this without that foundation. I began this ROM hack in August as a fun way to learn the ins and outs of the decomp, and what started as a small project quickly snowballed into something much bigger.

Is it unique? Probably not. I’m aware that there are plenty of “Emerald but better/modern” hacks out there, but I honestly didn’t even know about them until I was deep into this project. My hope is that, even if this hack doesn’t stand out as particularly unique, it still offers an enjoyable “modded” Emerald experience. I hope you have fun playing it!

Features
All Pokémon through Gen VII are available in Pokemon Emerald Plus Plus
Expansion Branch Features: Includes nearly everything from the expansion branch (credit: rh-hideout).
Following Pokémon: Every Pokémon can follow you! You can toggle this feature in the party menu (credit: W1serV1ser and me).
HMs as Regular Moves: HMs have been replaced with items and can be used without teaching them to your Pokémon (credit: NobodySociety).
Register Multiple Key Items: You can now register up to 4 key items like in ORAS (credit: Aarant).
EXP Share for All: EXP Share works for your entire team, making grinding optional and toggleable.
Bag Sorting: Sort your bag easily (credit: Ghoulslash).
Day/Night Cycle: Based on real-time clock (RTC) (credit: NotToDisturb).
Legendary Roamers: Multiple roaming legendaries are active at the same time with RoamersPlus (credit: DarkDown).
Improved Trainer AI: Slightly tougher than vanilla.
Mid-Battle Evolutions: Pokémon can now evolve during battles.
Increased Bag Capacity: More space for items.
More Premier Balls: Get extra premier balls when buying Poké Balls.
Shiny Charm: Available post-dex completion.
Dynamic Trainer Levels: Trainers scale with your level for a more challenging experience.
Catch All Legendaries: All legendaries and event-exclusive Pokémon are catchable, with some available early, some post-game, and some after milestones.
Updated Trainer Teams: All trainers have updated teams, abilities, and strategies, making key battles more challenging and engaging.
Special Features
Expanded Box Space: Now 18 boxes for a total of 540 slots (credit: cfmnephrite).
Poképedia: An in-game encyclopedia to help locate legendary Pokémon.
Wonder Trade Station: Available at the Battle Frontier for random trades.
Birch’s Fossil Machine: Instantly revive fossils in Birch’s lab.
Expanded Lilycove Department Store: More variety and options for items.
Forever Candy: An infinite-use rare candy to avoid grinding after completing the game.
Form Changer: Allows changing forms of certain Pokémon if the required items are missed.
Quality of Life (QoL) Features
Run Everywhere: Running is enabled indoors and nearly everywhere from the start.
Reusable TMs: TMs can be reused.
Forgettable HMs: HMs can be forgotten like regular moves.
Bike Mode Switch: Press R to switch between bike modes.
Nickname Anytime: Rename your Pokémon directly from the party menu.
Increased Text Speed: Overall faster text.
Cleanse Tag: Acts as an infinite repel.
Mass Healing: Heal multiple Pokémon directly from the party screen, similar to modern games.
IV/EV Checker: View IVs and EVs in the summary screen with R and L buttons.
Visible Hidden Power Type: No more guessing—Hidden Power’s type is shown.
Move Items Between Pokémon: Easily swap held items between team members.
Type Effectiveness Display: Shows super-effective and ineffective moves during battles.
Frequent Mirage Island: Mirage Island is more likely to appear.
Overflow Items: Items go to your PC if your bag is full.
Reasonable Battle Point Costs: Items in the BP shop are now more attainable.

Source: TheGamesDB