Last Updated: 12 Dec 2025

If you’re a fan of the Pokemon Crystal adventure on Game Boy Color (GBC), you know how exciting it is to explore the Johto and Kanto regions, battle Gym Leaders, collect badges, and train your favorite Pokemon. But sometimes, you might want to enhance your gaming experience, unlock rare Pokemon, or test creative scenarios without the usual grind. That’s where Pokemon Crystal Cheat Codes come in handy.

Using GameShark codes, Action Replay codes, or emulator-based cheats, players can modify stats, spawn shiny Pokemon, max out money, or even walk through walls. While cheat codes can add fun and experimentation, it’s important to use them cautiously. Always backup your save game before attempting any cheats, as improper use may cause glitches, freeze your game, or corrupt your save file.

Below, you’ll find a comprehensive table of proven Pokemon Crystal Cheat Codes that have been tested for both original cartridges and emulator ROM versions.

Pokemon Crystal Cheat Codes

Discover the best Pokemon Crystal cheat codes for Game Boy Color (GBC) and popular emulators. Use these GameShark codes to get infinite money, rare items, max stats, shiny Pokémon, and walk through walls. Follow our step-by-step guide to safely enhance your Crystal gameplay, modify levels, hatch eggs instantly, and explore Johto and Kanto regions faster.

Walk Through Walls (Pokemon Crystal Cheat Codes)

Effect: Bypass all terrain restrictions to explore Johto and Kanto freely
Risk:  HIGH (May cause game freezes)
Works On: ✓ GBC Cartridge ✓ Most Emulators
ROM Version: US v1.0 & v1.1 compatible

Complete Code Set (US v1.1):

010AA3CE

010AA4CE

010AA5CE

010AA6CE

9100FAC2

9100FBC2

9100FCC2

9100FDC2

 Critical Warning:

• Save before activating
  
• May freeze when entering buildings
  
• Disable immediately after use
  
• NEVER save with this cheat active
  

Pro Tip: Combine with Always Use Bike for rapid exploration. Perfect for reaching Celebi in Ilex Forest early.

Always Use Bike

Effect: Automatically uses the bike anywhere, including indoors
Risk:  LOW
Works On: ✓ GBC Cartridge ✓ Emulators
ROM Version: US v1.0 & v1.1 compatible

 Complete Code Set:

010182D6

91015DD9

 Pro Tip: Pair with Walk Through Walls to explore restricted areas faster.

 Max Money / Infinite Pokédollars

Effect: Grants 999,999 Pokédollars instantly
Risk:  MEDIUM (Avoid activating with multiple cheats)
Works On: ✓ GBC Cartridge ✓ Most Emulators
ROM Version: US v1.0 & v1.1, Japanese compatible

 Complete Code Set:

019973D5

019974D5

019975D5

910F4ED8

91424FD8

913F50D8

Pro Tip: Buy rare candies & master balls immediately to power up your team.

Max Pokéballs / Items

Effect: Fills all Pokéball slots and key items
Risk:  LOW
Works On: ✓ GBC Cartridge ✓ Most Emulators

 Sample Codes (US v1.1):

Slot 1: 0163FED5 9163D9D8  

Slot 2: 016300D6 9163DBD8  

Slot 12: 016314D6 9163EFD8

 Pro Tip: Combine with Shiny Pokémon Encounter codes to catch rare Pokémon efficiently.

 Have All Badges

Effect: Unlocks all Johto & Kanto Gym Badges instantly
Risk:  LOW
Works On: ✓ GBC Cartridge ✓ Most Emulators

Complete Code Set:

01FF7CD5

01FF7DD5

91FF57D8

91FF58D8

Pro Tip: Skip gym battles to reach the Elite Four or legendary Pokémon faster.

 Shiny Pokémon Encounter

Effect: Increases chance to encounter shiny Pokémon
Risk:  LOW
Works On: ✓ GBC Cartridge ✓ Most Emulators

 Primary Code:

010730D2

 Alternative:

910730D2

Pro Tip: Use with Wild Pokémon Modifier to get specific shiny Pokémon.

Transform Normal to Shiny Pokémon

Effect: Converts existing normal Pokémon into shiny variants
Risk:  LOW
Works On: ✓ GBC Cartridge ✓ Most Emulators

 Code by Party Slot:

1st Slot: 01EA3FDA / 91EAF4DC  

2nd Slot: 01AA40DA / 91AAF5DC  

(Continue pattern for slots 3–6)

 Wild Pokémon Modifier

Effect: Change the species of wild Pokémon encountered
Risk:  MEDIUM
Works On: ✓ GBC Cartridge ✓ Most Emulators

 Primary Code:

01xx04D2

 Alternative (if primary fails):

91xx04D2

Pokémon ID Examples:

• 01 = Bulbasaur | 04 = Charmander | 07 = Squirtle
  
• 96 = Mewtwo | FB = Celebi | F3 = Raikou
  (Full 251 Pokémon list available on PsyPokes)
  

 Enemy Pokémon Status Modifier

Effect: Change status of enemy Pokémon (sleep, poison, burn, etc.)
Risk:  MEDIUM
Works On: ✓ GBC Cartridge ✓ Emulators

 Active Code:

91xx14D2

Status Values (replace xx):

• 01 = Sleep (wakes turn 1)
  
• 08 = Poison
  
• 10 = Burn
  
• 20 = Frozen
  
• 40 = Paralyzed
  
• 0F = Poison + Sleep (combo)
  

 Instant Egg Hatch

Effect: Hatch eggs instantly
Risk:  LOW
Works On: ✓ GBC Cartridge ✓ Emulators

 Codes by Party Slot:

1st Egg: 010145DA 9101FADC  

2nd Egg: 010175DA 91012ADD  

3rd Egg: 0101A5DA 91015ADD  

(Continue pattern for slots 4–6)

 Instructions:

1. Place egg in party slot
   
2. Enable code → Take ONE step
   
3. Disable code immediately
   
4. Walk 10–40 steps → Egg hatches
   

Version Compatibility Matrix

Cheat Type	US v1.0	US v1.1	Japanese ROM	Notes
Walk Through Walls	✓	✓	Requires different codes	Japanese: 0101B0CE series
Shiny Encounter	✓	✓	✗	Japanese incompatible
Max Money	✓	✓	✓	Universal money addresses
Wild Pokémon Mod	Partial	✓	Partial	v1.0 may need 91xx04D2 variant

Quick Test: If codes starting with “01” don’t work, try changing to “91” prefix.

 How to Enter Codes on Popular Platforms

mGBA Emulator:

1. Pause → Cheats → Cheat List
   
2. Add New → Select GameShark
   
3. Paste code without spaces
   
4. Enable → Resume
   

My OldBoy! (Android):

1. Menu → Cheats → Add GameShark
   
2. Enter code → Save
   
3. Return to game → Auto-activates
   

Original GameShark Device:

1. Power on with GameShark
   
2. Cheat Menu → Add New Code
   
3. Input 8-digit codes exactly
   
4. Save to bank → Start game
   

Troubleshooting & Expert Tips

 Code Not Working?

• Switch “01” ↔ “91” prefix.
  

 Save Protection Protocol:

1. Backup save BEFORE any cheat
   
2. Test cheat 5 minutes
   
3. If stable, disable → Save
   
4. If glitchy, reload backup
   

 One-Cheat Rule:

• NEVER activate more than one cheat at once
  

 ROM Identification:

• “Pokemon Crystal (U) [v1.0]” = US v1.0
  
• “Pokemon Crystal (U) [v1.1]” = US v1.1
  
• “Pocket Monsters Crystal (J)” = Japanese
  

Frequently Asked Questions

Why don’t my cheat codes work?

The #1 reason is ROM version mismatch. Check your ROM filename and use our Version Compatibility Matrix above.

Can I use multiple cheats at once?

NEVER. Memory address conflicts cause 90% of game crashes. Enable one, test, disable, then try another.

Are these codes safe for my original cartridge?

Yes, but ALWAYS backup saves. Physical GameShark devices are more stable than emulator cheats.

 How do I backup my save on emulators?

mGBA: File → Save State | MyOldBoy: Menu → Save State → New Slot

What’s the most popular cheat?

“Walk Through Walls” (high risk) and “Shiny Encounter” (low risk) are most requested.

Conclusion

With these verified Pokémon Crystal cheat codes, you can unlock rare Pokémon, max your items, explore Johto and Kanto freely, and enhance your Game Boy Color or emulator gameplay safely. Always follow the step-by-step instructions, check ROM compatibility, and backup your save files to prevent glitches. Use these cheats wisely to level up your Pokémon adventure and make the most of your Crystal gaming experience.