of the Pokémon series
Arbitrary code execution
0x1500 control code arbitrary code execution (Crystal) | Cart-swap arbitrary code execution | Generation I custom map script pointer | Generation I invalid meta-map scripts | Generation I item ("8F", "ws m", "-g m", "5かい", "てへ" etc.) | Generation I move ("-", "TM42") | Generation I Trainer escape glitch text boxes | Generation II bad clone | Generation II Burned Tower Silver | Japanese Crystal Pokémon Communication Center SRAM glitches | Coin Case glitch | Generation II glitch Pokédex sortings | Pikachu off-screen glitch ACE | OAM DMA hijacking | Pikachu glitch emote | Generation III glitch Pokémon summary | Generation III glitch move animation) | Remote code execution | TM/HMs outside of the TM/HM pocket | ZZAZZ glitch Trainer FC
No further extensions
Cloning | Item duplication glitch (Generation I) | Pokémon merge glitch ("Q Glitch", Generation I) | Time Capsule exploit | Bug-Catching Contest data copy glitch (Generation II, Japan only) | Berry glitch | Battle Tower Lati@s glitch (Generation III) | (Mimic) Transform Rage glitch (Generation IV)
Transform held item glitch (Generation IV, Japan only) | Mimic glitch (Generation IV, Japan only)
Buffer overflow techniques
99 item stack glitch | LOL glitch | Rival LOL glitch | Instant LOL glitch | RAM LOL glitch | Out of bounds LOL glitch | blockoobLG | Instant encounter infinite chain glitch | LGFly | Super Glitch (Generation I) | Party remaining HP glitch | Super Glitch (Generation III) | Text pointer manipulation mart buffer overflow glitch | CoolTrainer♀-type move | Double distort CoolTrainer♀ corruption | Yami Shop glitch | Party Pokémon box data shift glitch | Unterminated name glitch item instant encounter (Japanese Red/Green)
(Generation I) Item stack duplication glitch
Generation I expanded items pack ( Glitch Rocket HQ maps, Map FE ( English and non-English European Yellow) | Map script pointer manipulation ( arbitrary code execution | Map script pointer item ball manipulation) | Text pointer manipulation ( arbitrary code execution | Item ball manipulation | Mart buffer overflow) | Trainerless instant encounter glitch
(Generation II) Bad clone glitch
????? party overloading ( Type 0xD0 move glitch | ????? map corruption | Celebi trick | Celebi Egg trick | Shiny Celebi trick | Glitch move map corruption | Overloaded party map corruption | Glitch Unown ( Glitch Unown map corruption) | Duplicate key items glitch ( Infinite items and item creation, Expanded Balls pocket ( Wrong pocket TM/HMs, Glitch Pokédex categories))
Closed menu (Japanese Red/Green) Select glitches
Dokokashira door glitch ( International) | Fossil conversion glitch ( international) | Second type glitch | Skip to Level 100 glitch | Trainer mutation glitch | Walk through walls ( International) | Lift glitch | Badge describer glitch
(Generation III) Pomeg glitch
Pomeg data corruption glitch ("Glitzer Popping") | Charm glitch
(Generation IV) Voiding
Broken escalator glitch (Japan only) | Elite Four door glitch (Japan only)
(Generation I) 2x2 block encounter glitches
Left-facing shore tile glitch ( in-game trade shore encounter trick, Old man trick, Trade link up shore encounter trick, Fight Safari Zone Pokémon trick) | Viridian Forest no encounter grass tiles glitch
Safari Zone exit glitch | RAM manipulation | Out of bounds Glitch City (Generation II) | Slowpoke Well out of bounds corruption (French Gold/Silver/Crystal)
Large storage box byte shift glitch
Storage box remaining HP glitch | Generation I max stat trick
Pikachu off-screen glitch
Trainer corruption glitch
Generation I save corruption | 255 Pokémon glitch | Expanded party encounter table manipulation (Generation I) | Send party Pokémon to a new game (Generation I) | Generation II save corruption | Mailbox glitches | Mystery Gift item corruption | Trainer House glitches
Trainer escape glitch
Death-warp | Ditto trick | Experience underflow glitch | Mew trick | Text box ID matching | Meta-map script activation
Walk through walls
Ledge method | Museum guy method | Rival's effect | Select glitch method ( International Select glitch method), Brock Through Walls
Surf down glitch
Grass/rock Surfing glitch (Spanish/Italian only) (adaptions: Submerge glitch (international)) | 8 8 (0x7C) grass/rock surfing glitch (English Red/Blue))
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This article is a summary page for different variations of a
glitches, etc. when talked about as a whole.
Pokémon cloning refers to natural glitches which allow the player to keep two copies of the exact same Pokémon. There are two known methods to do this in Pokémon Red, Blue, and Yellow.
This method was documented by Paco81. It is very risky and the save file could be destroyed if the timing when resetting is bad, but works.
Requires an empty space in your party.
Save the game in front of a Pokémon Center's PC.
Deposit a Pokémon into the Pokémon Storage System.
Attempt to save the game, but reset the game as soon as the Yes/No box disappears in "Would you like to SAVE the game?" without the text updating.
If done correctly, the player will have the same Pokémon in the party and storage system.
Cable Club method
Two cartridges that are both Pokémon Red, Blue, or Yellow Version.
The Pokémon to be cloned.
A Pokémon to be lost during the process (not on same game as the one to be cloned).
Link the two games and go to a Pokémon Center.
Go to the Cable Club and enter the Trade Center.
On one game, trade the Pokémon to be cloned, and on the other, trade the one to be deleted.
On the game originally having the Pokémon to be cloned, reset the game without saving. On the game where that Pokémon now resides, save.
The Pokémon to be cloned should now exist on both games, and the other Pokémon should be overwritten by one of the clones.
How it works
Simply because the game was not saved after the later deleted Pokémon was obtained, the save data still says that the player has the cloned Pokémon. On the other game, it was saved with the cloned Pokémon on it, so then both games have the same Pokémon.