To play, you will need to patch your legally acquired Pokemon Emerald ROM with one of the files in this prerelease (.bps or .ups). I recommend using a site like https://www.marcrobledo.com/RomPatcher.js/ to do the patch. Simply choose your legal copy of Pokemon Emerald and the patch you wish to apply, and then click Apply Patch. This will now create the ROM.
If you test a specific issue, please comment with your findings on the appropriate issue here in the pokeclassic repo. Thank you!
v1.5 Patch List:
QoL:
Player can now check EVs and IVs immediately after getting their Pokemon
HMs and certain TMs can be used in the field without teaching the move first if the Pokemon in question can learn the move and the player has the associated badge, if applicable
All fully evolved Pokemon can still learn the moves normally found only on their pre-evolved forms
Reworked Oak Aide Cedar and one of the lab Aides so players can always know where to find Cedar
Flash will fully light up a dark room instead of just a circle of it
Text color for moves in battle will change based on the effectiveness of the type, green for Super Effective, red for Not Effective, black for Regular. (credit: PokemonCrazy)
Base shiny odds are increased to 1:2048
Shiny Charm grants odds of 1:256
In-game explanations added for the DexNAV and Mega Evolution systems
Able to go back to Mt. Moon on foot from Cerulean City
Able to access the Fuschia Pokemon center from both sides of cliffs
Run, bike, and Dig / Escape Rope in more places
Amulet Coin will work if any Pokemon in the party holds it, regardless of participation
Passing the mother's or Ditto’s nature to offspring is possible if that pokemon holds an Everstone
The player may now fly to Route 4 Pokemon Center
Healing at Silph Co is always possible
Pokemon now have a chance to drop items when defeated (credit: Soilydude)
Shiny pokemon will also have a shiny indicator on the UI when encountered (credit: Demonheadge, InfiniteBacon42)
Pressing B in battle will change the selection indicator to the Run spot (credit: voloved)
Moves will now have a mid-battle move description window if the player presses R while choosing a move (credit: voloved)
Vending machine menu will remember the last option used (credit: Exclsior)
DexNav remains on longer
Legendaries will respawn daily. Once caught, they will have a higher chance of being shiny
Bill is more active in communications with the player and teaches as he goes so players don't miss DexNav and Mega upgrades
Gifted starters from Yellow have higher shiny chances than standard Pokemon
Checking berry tags is no longer the priority use for the berry menu
Updated various shops and added more Poke Ball options
Players can now see version numbers on the title screen
Berry plants now have higher yields, especially when watered
Updated the pokeball shortcut to cycle through options outside of menu (credit: voloved)
Better chain bonus and shiny odds as they relate to search levels in DexNav
New Additions:
Champion Match stands apart with restored music
Every Mega Stone now has a challenge trainer associated with it which will reward the player upon defeat
Play “tag” with Tangela
Partner Pikachu can now have 3 different abilities
Bike voucher now gifts the Acro and Mach bikes
Better balanced exp gain and division (thanks Heart and Soul for the idea)
BattleEngineV2's final version and a more recent version of the follower and Day/Night system were ported into Classic (credit: AsparagusEduardo, ghoulslash, DarkCrobat, and aarant)
All trainers are smarter
Rare Candies may drop as part of the Rock Smash item pool
Added Flame Orb, Toxic Orb, Air Balloon, Assault Vest, Focus Sash, Heavy Duty Boots, and Lagging Tail battle items
Sticking true to Pokemon Yellow, added a missing trainer and some gym trainer strategies
Flowers!
Erin’s Clefairy has a chance of giving a Lum berry
Restored credit sequence
Restored dev room
Trainer Card will now update when BP are earned outside the Battle Tower
Added more help and direction on what else there is to do after the player beats the game
Players will be given a hint about the Game Corner basement
Heart and Soul Gyarados visits Kanto (Gyarados can Fly)
Partner Pikachu can use Zippy Zap
TM additions from Heart and Soul
Pokemon Locations:
Mr. Mime now appears on Route 2 at night as a wild encounter
Scyther now appears on Route 18 as a day wild encounter
Bug Fixes:
Daily Rockets all work as intended
Nidorans now have correct learnsets
Rock Smash enthusiast is more literate
TM42 NPC is more literate
Event Mewtwo is now level 70
Battle Points earned in daily matches are set up better
Oak Aide Cedar is more literate
Rival fight before E4 reworked
Mewtwo gets its signature move in the learnset
Ability Capsules do what they say they are going to do
Costume Changer menu no longer has incorrect selections
Added graphics for Destiny Knot
Fossils are no longer revived as the opposite Pokemon if you have multiple fossils to revive
Bug Bite description
SS Anne NPC doesn't yell
Viridian Forest border is no longer a 1x1 pattern
Cut Trees (various)
Can no longer Surf on Cycling Road
TM item balls are the correct color
Mom is more literate
The correct ability will now be referenced if a pokemon is not allowed to switch out in battle
Partner Pikachu can be female (players with old saves may see a gender change upon loading the new version)
Rival Eevee can be male
Lightning Rod ability pop up is now properly formatted
Growth description more accurate
All dojo trainers get thirsty and can drink Fresh Water
Silph Co employees are more aware
Rocket Leader doesn't repeat himself
Partner Pikachu is buffed by Light Ball
Eviolite is classified as a Battle Item
Mega Kangaskhan now uses Inner Focus instead of Parental Bond due to engine limitation
Rival Eevee now sounds like an Eevee
Multi-Hit moves work as intended from gen 5 (credit: aarant)
Proper length for longer abilities in Ability Pop-up (credit: DizzyEggg)
It is now impossible to skip town before getting your Pokedex
Rocket Hideout burglars give out their TMs easier
DexNav can no longer find Pokemon off screen
Removed areas that didn’t have Pokemon outside causing crashes in DexNav
Non-Flash teams no longer fumble in total darkness
Learnsets are limited to 20 moves in order to make the Move Relearner teach all possible moves
Porygon now has the proper move pool
Trainer Kakunas will no longer break the game
Decaps for consistency
Daycare employee is no longer impolite
Fly Map updates appropriately (credit: Lil Dill)
Removed neutralizing gas
Fixed broken collision in Route 16
Partner Pikachu will no longer cosplay as a Treeco in the credits
Bernie is no longer a weirdo
Pokemon Center PC has appropriate capitalization
Adjusted BP implementation to mitigate situations where it says you got more BP than you actually did
Gym leaders have more consistent item usage in the post-game
Mew will no longer have a chance of being disobedient
Buffed various trainers across the game for better consistency
Battle Tower 3F stairs no longer look bad
Countless examples of Porymap 4.5 deciding to erase previously set event scripts
Reduced chances of optional double battles to prevent confusion over BPs not being awarded in the wrong places
Added explanations for why the Game Corner no longer has Pokemon or TMs
Adjusted BP amounts after balancing testing
Charizard no longer has transparent toe nails
Jessie and James will no longer get in the way of players who leave before fighting Giovanni in Rocket Hideout
Pewter will show it’s name now that Cedar won’t constantly be trying to call when entering from Route 2
Teleport will not show twice in the field moves menu for a Pokemon
Losers aren’t told they win
De-gendering in some areas that still had it
Dev Changes:
Improved instructions for those wishing to tinker and make changes
Abilities can now be defined on a trainer's team
Added explanations on how to adjust the DexNav odds, if desired
FOR THOSE INTERESTED IN ANOTHER FOLLOWER BESIDES PIKACHU, USE THE FIRSTFOLLOWER VERSION