Complete list of changes from vanilla - CyanSMP64/NatDexExtension GitHub Wiki

General

  • Expanded Pokémon roster, including forms
    • Up to Scarlet/Violet DLC: The Teal Mask (v1.0.0+)
    • Up to Scarlet/Violet DLC: The Indigo Disk (v1.1.0+)
  • Fairy type
    • Fairy-type moves deal Special damage (v1.x.x)
  • Updated type chart
    • Steel types take neutral damage from Ghost- and Dark-type moves
  • New moves
    • Disarming Voice, Draining Kiss, Play Rough, Disarming Voice, Moonblast, Dazzling Gleam (v1.0.0+)
  • Experience point yields updated
    • Scaled for balancing purposes
    • Updated to US/UM (v1.0.x)
    • Updated to Scarlet/Violet (v1.1.0+)
  • Level-up learnset levels updated to Scarlet/Violet
  • Base stats updated to Scarlet/Violet
  • Several cutscenes are removed or sped up
  • When a Repel runs out, there is a prompt to use another
  • The Safari Zone step limit was increased to 9999
  • Hidden items will sparkle when you get close to them. (v1.1.0+)
    • Keep your eyes peeled; you can exit the map and re-enter if you missed them. Items that have already been picked up will not sparkle.
  • The sound of a bell ringing can be heard when Pickup activates. reimiDinkDonk
  • Increased the space of the Bag's Items pocket
    • To 60 items (v1.0.x)
    • To 120 items (v1.1.0+)
  • An in-game BGM toggle in the options menu (v1.0.2+)
  • Faster battle engine
  • Faster fishing (v1.1.1+)
  • Pokémon battle sprites have been updated to the DS style (D/P/Pt/HG/SS/B/W/B2/W2)
    • As of v1.1.1, this includes every gender difference
  • Pokémon party menu sprites have been updated to the 3DS style (X/Y/OR/AS/S/M/US/UM)
  • Gen 1-5 legendaries have unique encounter music
  • New items
    • Shiny Stone, Dusk Stone, Dawn Stone, Ice Stone, Fairy Feather (v1.0.0+)
    • Linking Cord, Razor Claw, Razor Fang, Dubious Disc (v1.1.0+)
  • Held items that usually allow Pokémon to evolve through trade or by level-up, double as evolution stones, like in Pokémon Legends: Arceus. (v1.1.0+)
  • Impossible evolutions changed (see the list of evolution methods as of v1.1.3)
  • Every Pokémon gets at least one new move on evolution (every version except v1.0.2)
    • As of v1.1.0, this is handled by a randomizer setting.
  • In-game option for instant text (v1.0.2+)
    • Attempting to select the instant text option in the randomizer will cause the game to crash. This is an intentional measure to stop IronMON players from trying to use settings files from the core Tracker rather than the ones designed for Nat. Dex.
  • Move and ability names are modernized. (v1.0.2+)
  • Ability pop-ups in battle à la Black/White. (v1.1.0+)
  • Moon Stones can be sold (v1.1.0+)
  • Super Kaizo mode (v1.1.3+)
    • At the start of the game, Mom will prompt you to enable it optionally.
    • All trainers have Smart AI
    • Hidden item events and sparkles are deactivated, excluding the ones in dungeons (except renewable hidden items) and the ones before Roxanne (Emerald) and Mt. Moon (FireRed)
    • Seashore House (Emerald) and every room on the S.S. Anne with Trainers (FireRed) are blocked off.
    • (FireRed) Route 25 and Route 24 post Nugget Bridge are blocked off until the player has received the Cascade Badge
    • (FireRed) Celadon Game Corner is blocked off until the player has received the Rainbow Badge

Emerald

  • Diving speed is doubled
  • Item balls containing TMs appear green
  • All Pokémon Centers have a Name Rater
    • They are represented by a sprite of Dusclops
  • PC Potion was moved next to the Starter bag
  • The player will receive both the Mach and Acro Bike at once
  • An NPC in Oldale Town was modified to max out your Pokémon's friendship. It can only be used once per save file.
    • Please note that this is against the spirit of IronMON and should only be used if you are fully aware of it.
  • There is a Nurse stationed in Petalburg Woods. She will only heal your party if none of your Pokémon are poisoned.
  • Despite the removal and/or truncation of most cutscenes, you will not be warped to the Lab after the first rival battle if you win while poisoned.

FireRed

  • Item balls containing TMs appear yellow
  • All Pokémon Centers have a Name Rater
    • They are represented by a sprite of Slowbro
  • PC Potion was moved to Oak's Lab
  • Hidden items that have a chance to respawn after 1500 steps are now guaranteed and don't respawn, except in Mt. Moon
  • Bill no longer asks you to go to the Sevii Islands after defeating Blaine, but you can still see him in Cinnabar's Pokémon Center
  • An NPC in Viridian City was modified to max out your Pokémon's friendship. It can only be used once per save file.
    • Please note that this is against the spirit of IronMON and should only be used if you are fully aware of it.
  • There is a Nurse stationed in Viridian Forest. She will only heal your party if none of your Pokémon are poisoned.
  • The Move Reminder, located initially on Two Island, has moved to Celadon City. His house is west of the Pokémon Center.
    • You couldn't enter this building in vanilla
  • A Hiker NPC outside Rock Tunnel will give out HM05 Flash.
  • Purchasing 10 Poké Balls at once will give you a free Premier Ball, à la Pokémon Emerald. (v1.1.1+)

Randomizer

  • The randomizer will natively scale the levels up to as high as 60%
  • The "Legendary" ban list now contains all Pokémon with 600 or more BST, excluding sub-600 BST Legendary and Mythical Pokémon. Meanwhile, the "Strong Legendary" ban list is the same, but without any non-Legendary, non-Mythical, or Pokémon with exactly 600 BST.
    • The 600+ BST ban list changes to a 641+ BST ban list when "Randomize OTs" under the in-game trade section is unchecked. (v1.1.0+)
  • More options for limiting Pokémon
    • All generations from 1 to 9 (v1.0.2+)
    • Mega Evolved Pokémon (v1.1.0+)
    • Eternamax Eternatus (v1.1.0+)
    • Regional forms (v1.1.1+)