Pokémon LeafGreen remains one of the most enjoyable ways to explore the Kanto region. The Game Boy Advance remake preserves the familiar journey of collecting Pokémon, earning Gym Badges, challenging powerful trainers, and completing the Pokédex while adding improved visuals and content connected to later generations.
However, completing every objective can require a considerable amount of time. Rare encounters may take hours, useful items can be difficult to obtain, and training an entire team often involves repeating the same battles. Cheat codes provide an alternative way to experiment with the game, create unusual teams, or move past a section that has become frustrating.
This guide collects the most useful Pokémon LeafGreen GameShark, Action Replay, and Code Breaker cheats. It includes wild Pokémon modifiers, Legendary encounters, Shiny Pokémon, unlimited money, Rare Candy, Master Balls, teleportation, nature modification, movement cheats, and other helpful options.
Important Steps Before Using Pokémon LeafGreen Cheats
Cheat codes modify information stored or processed by the game. An incorrect code, incompatible game version, or unusual combination of active cheats can damage a save file or create unexpected behavior.
Always create a separate save before activating a code. Emulator users should also create a save state, but it is safer to keep an ordinary in-game save because save states can preserve an error created by an active cheat.
- Confirm that the cheat matches Pokémon LeafGreen rather than FireRed;
- Select the correct cheat type in the emulator or hardware menu;
- Enter required master codes before activating dependent codes;
- Use one major cheat at a time whenever possible;
- Disable encounter and movement codes after obtaining the desired result;
- Keep a clean backup of the original save file;
Some codes behave differently depending on the game revision, emulator, cartridge region, or cheat device. A code that works on one configuration may fail on another even when it has been entered correctly.
How to Enter Cheat Codes
The exact process depends on the emulator or physical cheat device. Most emulators include a Cheats menu where players can create a new entry, select a code format, paste the code, and activate it.
Codes labeled Code Breaker should be entered as Code Breaker codes. GameShark V3 and Action Replay codes usually share a compatible format, although emulator terminology may vary.
When several lines belong to one cheat, enter them together as a single entry unless the emulator specifically requires separate lines. Master codes should normally be stored as their own active entry.
Wild Pokémon Modifier
The wild Pokémon modifier replaces ordinary encounters with a selected species. It is useful for building a custom team, completing Pokédex entries, or encountering Pokémon that are normally unavailable in LeafGreen.
Activate the following Code Breaker master codes first:
0000BE99 000A
1003DAE6 0007
After enabling the master code, activate one species code. Walk through grass, caves, or another area that normally produces wild encounters.
Kanto Starter and Popular Pokémon Codes
- Bulbasaur: 83007CEE 0001;
- Ivysaur: 83007CEE 0002;
- Venusaur: 83007CEE 0003;
- Charmander: 83007CEE 0004;
- Charmeleon: 83007CEE 0005;
- Charizard: 83007CEE 0006;
- Squirtle: 83007CEE 0007;
- Wartortle: 83007CEE 0008;
- Blastoise: 83007CEE 0009;
- Pikachu: 83007CEE 0019;
- Raichu: 83007CEE 001A;
- Abra: 83007CEE 003F;
- Alakazam: 83007CEE 0041;
- Machamp: 83007CEE 0044;
- Gengar: 83007CEE 005E;
- Onix: 83007CEE 005F;
- Scyther: 83007CEE 007B;
- Magmar: 83007CEE 007E;
- Gyarados: 83007CEE 0082;
- Lapras: 83007CEE 0083;
- Ditto: 83007CEE 0084;
- Eevee: 83007CEE 0085;
- Vaporeon: 83007CEE 0086;
- Jolteon: 83007CEE 0087;
- Flareon: 83007CEE 0088;
- Snorlax: 83007CEE 008F;
- Dratini: 83007CEE 0093;
- Dragonair: 83007CEE 0094;
- Dragonite: 83007CEE 0095;
Johto Starter and Popular Pokémon Codes
- Chikorita: 83007CEE 0098;
- Bayleef: 83007CEE 0099;
- Meganium: 83007CEE 009A;
- Cyndaquil: 83007CEE 009B;
- Quilava: 83007CEE 009C;
- Typhlosion: 83007CEE 009D;
- Totodile: 83007CEE 009E;
- Croconaw: 83007CEE 009F;
- Feraligatr: 83007CEE 00A0;
- Crobat: 83007CEE 00A9;
- Ampharos: 83007CEE 00B5;
- Espeon: 83007CEE 00C4;
- Umbreon: 83007CEE 00C5;
- Steelix: 83007CEE 00D0;
- Scizor: 83007CEE 00D4;
- Heracross: 83007CEE 00D6;
- Kingdra: 83007CEE 00E6;
- Tyranitar: 83007CEE 00F8;
Hoenn Starter and Popular Pokémon Codes
- Treecko: 83007CEE 0115;
- Grovyle: 83007CEE 0116;
- Sceptile: 83007CEE 0117;
- Torchic: 83007CEE 0118;
- Combusken: 83007CEE 0119;
- Blaziken: 83007CEE 011A;
- Mudkip: 83007CEE 011B;
- Marshtomp: 83007CEE 011C;
- Swampert: 83007CEE 011D;
- Gardevoir: 83007CEE 018A;
- Bagon: 83007CEE 018B;
- Shelgon: 83007CEE 018C;
- Salamence: 83007CEE 018D;
- Beldum: 83007CEE 018E;
- Metang: 83007CEE 018F;
- Metagross: 83007CEE 0190;
Disable the modifier after catching the desired Pokémon. Leaving it active will continue replacing ordinary encounters with the selected species.
Legendary Pokémon Encounter Codes
Legendary encounter cheats use the same wild modifier system. Activate the Code Breaker master codes before enabling one of the following options.
Master codes:
0000BE99 000A
1003DAE6 0007
Legendary Encounter List
- Articuno: 83007CEE 0090;
- Zapdos: 83007CEE 0091;
- Moltres: 83007CEE 0092;
- Mewtwo: 83007CEE 0096;
- Mew: 83007CEE 0097;
- Lugia: 83007CEE 00F9;
- Ho-Oh: 83007CEE 00FA;
- Celebi: 83007CEE 00FB;
- Regirock: 83007CEE 0191;
- Registeel: 83007CEE 0192;
- Regice: 83007CEE 0193;
- Kyogre: 83007CEE 0194;
- Groudon: 83007CEE 0195;
- Rayquaza: 83007CEE 0196;
- Jirachi: 83007CEE 0199;
- Deoxys: 83007CEE 019A;
Mew and Deoxys obtained through modified encounters may not behave like officially distributed event Pokémon. Obedience and event flags can differ from normal gameplay.
Legendary Pokémon Teleport Codes
Teleport cheats move the player directly to areas associated with specific Legendary Pokémon. Save before using one because teleporting from the wrong location can place the character in an unstable position.
- Mt. Ember for Moltres: 23ADAABA A9000BEB;
- Seafoam Islands for Articuno: BC4AFF82 6C4609A2;
- Power Plant for Zapdos: EA5BB107 05E634BB;
- One Island route associated with Mewtwo: A6A339F5 FC0ADC79;
Some destinations still require normal story progress. Access to the area associated with Mewtwo may depend on completing required post-game objectives and repairing the Network Machine.
After teleporting, deactivate the code before entering another building or changing areas. Remaining teleports can repeatedly return the player to the same destination.
Shiny Pokémon Cheat
Shiny Pokémon normally appear at extremely low odds. This GameShark V3 or Action Replay code changes wild encounters so that Pokémon appear in their alternate color form.
A74320F4 175B5B22
18452A7D DDE55BCC
7FE56658 F483AC73
F8B8373C BAB2B56F
Activate the complete code, enter an area with wild encounters, and locate the desired Pokémon. Disable the code after catching it, or future encounters may continue appearing Shiny.
Combining the Shiny code with a wild Pokémon modifier can help create a specific Shiny encounter. However, running several encounter cheats at the same time increases the possibility of unusual data, so save beforehand.
Pokémon Nature Modifier
A Pokémon’s nature affects how its stats develop. The nature modifier can force an encountered Pokémon to receive a selected nature.
Every nature code begins with this line:
AA3BB0ED 41CD5D95
Add one of the following nature lines beneath it:
- Hardy: D0E34D66 5796A7D3;
- Lonely: D73BC50A 5F47AA0E;
- Brave: E485844D 2F24038C;
- Adamant: 5EB8DEEE 692ED298;
- Naughty: 83286B46 6479AA98;
- Bold: 35EB915F 08F33974;
- Docile: A58F6F1B BFB13FEF;
- Relaxed: 34027F23 7E7E1599;
- Impish: CDA2AB99 F89D5BB9;
- Lax: D593BF29 E18AAAE5;
- Timid: 1BC372C9 06B4D17F;
- Hasty: D4950A99 D729D80A;
- Serious: 93F04759 F95753D9;
- Jolly: E9EC2CBF A7EDD4A7;
- Naive: 56F744B0 37E16732;
- Modest: E1EB2109 4480C28D;
- Mild: A2461E51 304137B6;
- Quiet: 0456554B 66D3AAF9;
- Bashful: B05B4CCD A0A1505B;
- Rash: 909149AB 2DE8726A;
- Calm: 31F62F82 D9A0C100;
- Gentle: 9A41D845 41B93FE6;
- Sassy: D47DA721 6C3B9FFC;
- Careful: 1A15BF1E E72650E4;
- Quirky: 5A7B2626 21ECD183;
For example, an Adamant nature entry should contain both the shared first line and the Adamant-specific second line.
Activate the nature modifier before beginning the encounter. Save after confirming that the captured Pokémon has the intended nature, then disable the code.
Unlimited Master Balls in the PC
Master Balls can capture a wild Pokémon without the normal risk of escape. This Code Breaker cheat places them in the player’s PC item storage.
82025840 0001
Open the PC and access item storage after enabling the cheat. The displayed quantity may behave unusually, but the item can generally still be withdrawn.
Deactivate the code after taking the required amount. Keeping item replacement codes active can interfere with other PC inventory slots.
Unlimited Rare Candy in the PC
Rare Candy instantly increases a Pokémon’s level by one. This cheat replaces the selected PC item slot with Rare Candy.
82025840 0044
Enable the code, open the PC, and withdraw the required quantity. Disable it before storing unrelated items in the affected slot.
Using a large amount of Rare Candy provides fast levels, but Pokémon trained without regular battles may have different stat development because they receive fewer effort values from defeated opponents.
Infinite Money
The unlimited money cheat gives the player a large amount of currency for Poké Balls, healing supplies, evolution items, and other purchases.
Activate these master codes first:
00000554 000A
101DC9B0 0007
83005000 0000
83005002 0000
Then activate the money codes:
82025838 104E
8202583A E971
Open the trainer menu or visit a shop to confirm the updated balance. Disable the code after the amount has been applied.
All Gym Badges
This GameShark V3 or Action Replay code unlocks all Gym Badges without completing the corresponding Gym challenges.
EFCE867D
5403D40D
After activating the code, walk through a doorway several times before checking the Trainer Card. The source instructions recommend entering and leaving a building approximately five times to trigger the update.
Unlocking badges early may affect story flags, obedience rules, and access requirements. It is safer to use this cheat on a secondary save created for experimentation.
Walk Through Walls
The walk-through-walls code allows the player to move across many barriers, including walls, trees, and blocked paths.
509197D3 542975F4
78DA95DF 44018CB4
This cheat can help escape an awkward position or reach an area more quickly. It can also place the player outside the intended map boundaries.
Move carefully and avoid saving while standing inside an object, inaccessible room, or black map area. Disable the code before using ladders, doors, stairs, caves, or scripted transitions.
No Random Battles
This Code Breaker cheat disables ordinary wild encounters while travelling through grass, caves, and other encounter areas.
A202166E FF00
820255AC 0000
It is useful when returning through an explored route or moving toward a specific destination without repeated interruptions.
Disable it when you want to train Pokémon or search for a wild species. It can also be combined with movement cheats, although activating multiple codes increases the chance of unexpected behavior.
Catch an Opposing Trainer’s Pokémon
This GameShark V3 or Action Replay code changes battle behavior so that Poké Balls can be used against an opposing trainer’s Pokémon.
4D83B1BF E0F5F507
8E883EFF 92E9660D
B6C5368A 08BE8FF4
90B4977C C0151DC2
Save immediately before activating it. According to the original instructions, players should enter the cheat before battle, press L and R repeatedly, and then use a Poké Ball.
This is one of the riskier codes because it changes a battle type that normally prevents captures. It may create invalid Pokémon data or a Bad Egg. Keep it disabled during ordinary battles and never test it on your only save.
Useful Cheat Combinations
Certain codes can be combined to create specific results, but combinations should be used cautiously.
Specific Shiny Pokémon
- Activate the master code;
- Enable the selected wild Pokémon modifier;
- Enable the Shiny Pokémon code;
- Enter an encounter area;
- Catch the Pokémon;
- Disable both encounter cheats;
Fast Legendary Capture
- Activate the selected Legendary encounter code;
- Use the Master Ball PC code;
- Withdraw several Master Balls;
- Disable the item code;
- Find and capture the Legendary Pokémon;
- Disable the encounter modifier;
Fast Exploration
- Enable No Random Battles;
- Use Walk Through Walls only when required;
- Move back onto a normal path before saving;
- Disable Walk Through Walls before changing maps;
Do not activate every cheat simultaneously. Encounter modifiers, inventory replacements, teleportation, and movement changes can interfere with one another.
Why a Pokémon LeafGreen Cheat May Not Work
A code can fail even when it appears correct. The most common cause is selecting the wrong cheat format.
- The code type does not match the selected emulator setting;
- A required master code is missing;
- The cheat was created for another regional version;
- The game revision uses different memory addresses;
- Spaces or line breaks were entered incorrectly;
- Another active cheat is creating a conflict;
- The game must change locations before the result appears;
- The emulator does not fully support the code type;
Disable all cheats, restart the game, and test one entry at a time. Confirm that the game is Pokémon LeafGreen and not Pokémon FireRed, because visually similar releases can still use different code behavior.
How to Protect Your Save File
Create several backups rather than relying on one save state. A useful system includes a clean save without cheats, a temporary experimental save, and a recent in-game save after confirming that everything works normally.
Do not save immediately after teleporting or moving through a wall. Return to an ordinary accessible area first.
Inspect the party and PC after using encounter or capture modifiers. Remove any suspicious Bad Egg only through a verified safe method rather than attempting to hatch or move it repeatedly.
When a cheat produces unusual graphics, missing menus, frozen movement, or corrupted items, close the game without saving and return to the backup.
Which Pokémon LeafGreen Cheats Are Safest?
No memory-modifying code is completely risk-free, but simple encounter and item codes are generally easier to control than story, teleportation, and opposing-trainer capture cheats.
The following options are normally the most straightforward when activated individually and disabled after use:
- Wild Pokémon modifier;
- Legendary encounter modifier;
- Shiny Pokémon encounters;
- Master Balls in PC;
- Rare Candy in PC;
- No Random Battles;
Walk Through Walls, teleportation, all-badges, and opposing-trainer capture codes require greater caution because they can interfere with map position, progression flags, or Pokémon data.
Do Cheats Prevent Normal Game Completion?
Many cheats allow the main story to continue, but progression codes can skip or incorrectly activate events. Unlocking every badge early, entering restricted areas, or teleporting past required objectives may leave the game waiting for a flag that was never completed.
Players interested in finishing the campaign normally should use quality-of-life codes selectively. Item and encounter modifiers usually affect progression less than codes that change badges, locations, or story access.
A separate cheat-focused save is the safest option for experimentation.
Best Pokémon LeafGreen Cheats for Casual Play
The most useful cheats depend on what you want to change. Players interested in completing the Pokédex will benefit from wild encounter modifiers. Anyone building a particular competitive-style team may prefer nature codes and faster leveling.
Master Balls reduce the frustration of rare captures, while No Random Battles makes repeated travel more convenient. Shiny modifiers are ideal for players who enjoy alternate appearances but do not want to depend on extremely low encounter odds.
Movement and teleportation codes provide greater freedom, but they should be reserved for situations where ordinary progression is no longer important.
Final Pokémon LeafGreen Cheat Checklist
- Create a backup before entering any code;
- Confirm whether the code uses Code Breaker or Action Replay format;
- Activate required master codes first;
- Test one cheat at a time;
- Disable wild encounter codes after catching the selected Pokémon;
- Turn off item codes after withdrawing supplies;
- Never save outside normal map boundaries;
- Avoid combining teleportation and movement codes;
- Keep a separate save for experimental cheats;
- Restart from a clean backup when unusual behavior appears;
Using Pokémon LeafGreen Cheats Responsibly
Cheats can transform Pokémon LeafGreen into a flexible sandbox. They allow players to build impossible early teams, encounter Pokémon from several generations, collect Shiny variants, experiment with natures, and reduce repetitive training.
The best approach is to decide which part of the experience you want to change. Use an encounter code when you want a particular Pokémon, an item code when resources have become repetitive, or a movement code when testing areas outside ordinary progression.
Activate only what you need, verify the result, and disable the code immediately afterward. With reliable backups and careful use, these cheats can provide a completely different journey through Kanto without sacrificing the original save that took many hours to create.
