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Pokémon Timeless Diamond & Spaceless Pearl
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Pokémon Definitive Heartgold
Category: NDS
Author: BigNation
Date: 2025-12-24
Description
It is a complete NDS ROM hack that delivers an enhanced, definitive experience of the beloved Johto and Kanto regions. Designed for a casual-yet-engaging playthrough, this hack's main goal is to make all 493 Pokémon from the first four generations obtainable in a single game. The world has been enriched with new story content, new areas to explore, and brand new in-game events to encounter every Mythical and Legendary Pokémon. The game is packed with essential quality-of-life improvements, including infinite-use TMs, forgettable HMs, an IV/EV checker, and the removal of trade evolutions. While the game is more difficult than vanilla HeartGold, it avoids Kaizo-level challenges, instead offering revamped trainer teams that create a fair but engaging journey for all players.
Features
- All 493 Pokémon Obtainable: The game's core feature. Every single Pokémon from the first four generations is available to be caught in a single playthrough without the need for trading or external events.
- New Story Content & Areas: The game is expanded with brand new, original story content in both the main game and the post-game, as well as new areas to explore for extra and unique content.
- New Mythical & Legendary Events: The game includes new, custom in-game events to encounter and capture every Mythical and Legendary Pokémon.
- Diverse Wild Encounters: All routes and areas have had their wild encounter tables diversified, allowing for a much greater variety of Pokémon and team compositions throughout the adventure.
- No More Trade Evolutions: All evolution methods that required trading have been replaced with new, accessible in-game criteria (e.g., Level 36 for standard trade evos, holding an item and leveling up for item-based trade evos).
- New Evolution Methods for Gen 4: Eevee now evolves into Leafeon with a Leaf Stone and Glaceon with a Dawn Stone. Magneton and Nosepass evolve with a Thunder Stone.
- Infinite TMs & Forgettable HMs: All TMs in the game have been changed to have infinite uses, and all HMs can be freely forgotten without needing a Move Deleter.
- Built-in IV/EV Checker: An IV/EV checker is built directly into the Pokémon summary screen, accessible by pressing the 'R' button.
- Free Move Tutors & Relearner: All Move Tutors and the Move Relearner throughout the game are now completely free to use.
- Modernized Rare Candy Usage: Rare Candies now function like in Generation 5; using one will not close the bag, allowing for faster leveling.
- Instant Friendship Evolutions: Pokémon that evolve via high friendship will now evolve after gaining just one level, once their friendship is maxed out.
- Instant Kurt Pokéballs: Kurt will now craft Apricorn Poké Balls instantly, removing the original 24-hour waiting period.
- Reusable Repels: The repel system has been updated to be reusable, likely with a prompt to use another.
- All Regional Starters Obtainable: A new, custom character has been added to the game who will gift you the starter Pokémon from other regions.
- Enhanced Trainer Battles: All trainers have revamped teams. The AI is also designed to adapt and become tougher as you gain access to more resources like Move Tutors.
- Streamlined World Progression: Most unnecessary HM obstacles (like Cut trees) and the need for Flash in caves have been removed to improve the flow of the game.
- No Overworld Poison Damage: Your Pokémon will no longer take damage from poison while walking in the overworld.
- Faster Egg Hatching: The number of steps required to hatch an egg has been significantly reduced.
- Maintains Classic Pokémon Identity: The hack intentionally does not include modern mechanics like the Fairy Type, Mega Evolutions, or a Physical/Special Split. Pokémon stats, types, and learnsets are also unchanged to preserve the vanilla Gen 4 feel.
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NDS
Pokémon Definitive Heartgold
By BigNation
Views
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CompletedExp ShareFairy TypeMega EvolutionNew Story
PlatformNDS
AuthorBigNation
PostedDecember 24, 2025
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Game Description
It is a complete NDS ROM hack that delivers an enhanced, definitive experience of the beloved Johto and Kanto regions. Designed for a casual-yet-engaging playthrough, this hack's main goal is to make all 493 Pokémon from the first four generations obtainable in a single game. The world has been enriched with new story content, new areas to explore, and brand new in-game events to encounter every Mythical and Legendary Pokémon. The game is packed with essential quality-of-life improvements, including infinite-use TMs, forgettable HMs, an IV/EV checker, and the removal of trade evolutions. While the game is more difficult than vanilla HeartGold, it avoids Kaizo-level challenges, instead offering revamped trainer teams that create a fair but engaging journey for all players.
Original Creator
Original Creator
Visit Source / Author Website
https://www.pokecommunity.com/threads/pok%C3%A9mon-definitive-heartgold-complete.539556/
Project Version 1.0 (Completed) - 21/12/2025 - This is a complete game. The full Johto story and the Kanto post-game are both finished and playable from start to finish.
Key Features
All 493 Pokémon ObtainableThe game's core feature. Every single Pokémon from the first four generations is available to be caught in a single playthrough without the need for trading or external events.
New Story Content & AreasThe game is expanded with brand new, original story content in both the main game and the post-game, as well as new areas to explore for extra and unique content.
New Mythical & Legendary EventsThe game includes new, custom in-game events to encounter and capture every Mythical and Legendary Pokémon.
Diverse Wild EncountersAll routes and areas have had their wild encounter tables diversified, allowing for a much greater variety of Pokémon and team compositions throughout the adventure.
No More Trade EvolutionsAll evolution methods that required trading have been replaced with new, accessible in-game criteria (e.g., Level 36 for standard trade evos, holding an item and leveling up for item-based trade evos).
New Evolution Methods for Gen 4Eevee now evolves into Leafeon with a Leaf Stone and Glaceon with a Dawn Stone. Magneton and Nosepass evolve with a Thunder Stone.
Infinite TMs & Forgettable HMsAll TMs in the game have been changed to have infinite uses, and all HMs can be freely forgotten without needing a Move Deleter.
Built-in IV/EV CheckerAn IV/EV checker is built directly into the Pokémon summary screen, accessible by pressing the 'R' button.
Free Move Tutors & RelearnerAll Move Tutors and the Move Relearner throughout the game are now completely free to use.
Modernized Rare Candy UsageRare Candies now function like in Generation 5; using one will not close the bag, allowing for faster leveling.
Instant Friendship EvolutionsPokémon that evolve via high friendship will now evolve after gaining just one level, once their friendship is maxed out.
Instant Kurt PokéballsKurt will now craft Apricorn Poké Balls instantly, removing the original 24-hour waiting period.
Reusable RepelsThe repel system has been updated to be reusable, likely with a prompt to use another.
All Regional Starters ObtainableA new, custom character has been added to the game who will gift you the starter Pokémon from other regions.
Enhanced Trainer BattlesAll trainers have revamped teams. The AI is also designed to adapt and become tougher as you gain access to more resources like Move Tutors.
Streamlined World ProgressionMost unnecessary HM obstacles (like Cut trees) and the need for Flash in caves have been removed to improve the flow of the game.
No Overworld Poison DamageYour Pokémon will no longer take damage from poison while walking in the overworld.
Faster Egg HatchingThe number of steps required to hatch an egg has been significantly reduced.
Maintains Classic Pokémon IdentityThe hack intentionally does not include modern mechanics like the Fairy Type, Mega Evolutions, or a Physical/Special Split. Pokémon stats, types, and learnsets are also unchanged to preserve the vanilla Gen 4 feel.
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