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)
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
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 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
Pomeg data corruption glitch ("Glitzer Popping") | Charm glitch
Broken escalator glitch (Japan only) | Elite Four door glitch (Japan only)
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))
(view, talk, edit)
The Celebi Egg trick is a glitch in Pokémon Gold, Silver and Crystal. It allows the player to obtain an Egg that hatches into a Celebi. An advantage of this glitch over the Celebi trick is that the Celebi is registered into the Pokédex.
The bad clone glitch (one of the parent glitches of this trick) was documented by Paco81, as was his early methods on obtaining Celebi.
1) Obtain an Egg with a Pokémon that would know Beat Up as its third move after hatching. To do this, raise a male and female Sneasel to level 57 with the same moves and make sure Beat Up is at move position 3.
2) Obtain a bad clone:
In order to get a bad clone you should deposit more Pokémon than you have ever deposited in a box (and at least 5 or so), then change boxes and reset the game shortly after the Yes/No box disappears (Gold/Silver) or after SAVING... DON'T TURN OFF THE POWER. is fully printed (Crystal).
Getting a bad clone is normally difficult but Pokémon Stadium 2's Game Boy Tower makes it a lot easier if you reset the game after the "Saving..." message appears at one of the aforementioned moments.
To identify a bad clone, the bad clone may be female with a glitched name and become level 1 after you withdraw it from the PC.
1) Deposit the bad clone into Day Care and out to stabilize it into a ?????.
2) Put the bad clone at the top of the party.
3) Use move PkMn w/o mail to move a seventh Pokémon to the top of the party.
4) Don't touch the party, and ask the Day Care lady to raise the ????? again. This time don't take the ????? out of the Day Care yet.
5) Deposit the first Pokémon and then the second Pokémon, and use move PkMn w/o mail to move the Egg to the top of the party.
6) Deposit Pokémon 2-6, which may shift back bytes for the Egg's name each time. After the depositing, Beat Up [0xFB] (move 3) will shift into the Pokémon species byte 2, allowing you to obtain Celebi after hatching the Egg.
7) Use the Bicycle to cycle around until the Egg hatches into a Celebi.
8) If the Celebi is level 0, raise its level through taking it into Day Care and out, a battle, or a Rare Candy. Ideally raising it to level 1 will allow it to learn its starting moves Leech Seed, Confusion, Heal Bell and Recover.
The Celebi/Pokémon will be holding an item based on the ID of move 4.
If possible, this glitch can be used with another move as move 3 to obtain a Pokémon other than Celebi. This depends on the ID of the move, which will be converted into a Pokémon ID. For example, Flail (hex:AF) would result into Togepi (also hex:AF).
To see which IDs correspond with which moves, Pokémon and items, refer to The Big HEX List.