Mailbox glitches
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)
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)
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 (Generation II)
????? 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 (Japanese Red/Green)
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 glitch (Generation III)
Pomeg data corruption glitch ("Glitzer Popping") | Charm glitch
Voiding (Generation IV)
Broken escalator glitch (Japan only) | Elite Four door glitch (Japan only)
2x2 block encounter glitches (Generation I)
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
SRAM glitches
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
Death-warp | Ditto trick | Experience underflow glitch | Mew trick | Text box ID matching | Meta-map script activation
Ledge method | Museum guy method | Rival's effect | Select glitch method (International Select glitch method), Brock Through Walls
Grass/rock Surfing glitch (Spanish/Italian only) (adaptions: Submerge glitch (international)) | 8 8 (0x7C) grass/rock surfing glitch (English Red/Blue))
Mailbox glitches are a division of SRAM glitches in Generation II.
These glitches occur in Pokémon Gold and Silver (and Pokémon Crystal with arbitrary code execution) when data for the player's mailbox becomes corrupted with glitch mail. When the player has an excessive number of mail, viewing the mailbox may cause a Glitch City.
The glitches are often accompanied by Trainer House glitches, a delivery man appearing in Pokémon Centers and/or the Mystery Gift option becoming available on the menu without having to talk to the girl in green on Goldenrod City Department Store's fifth floor.
The glitch can be activated by viewing certain glitch Unown in the Pokédex, which are available through ????? party overloading or arbitrary code execution (e.g. via the Coin Case glitch).
Glitch mail
Glitch mail refers to glitchy mail sometimes generated inside the player's mail box in Generation II after corruption.
Glitch mail may be of an invalid type (meaning that it has an index number which is not used for a valid mail item such as Flower Mail), and may display glitch text, either in the contents or message itself, or both. Glitch mail may be signed from 'GREEN', which is from the control character hex:39, and will appear in "00 39" corruption patterns.
A glitch mail will become an item when it is put into the bag, depending on the mail item's index number. As mentioned above, a mail item in the mailbox may not be of a valid kind (this is the case with most index numbers), so it is possible to obtain items such as "?" (hex:00), which will not bring up a screen to attach a message to it when the item is held by a Pokémon.
Excessive mail glitch
When there is an excessive amount of mail (the maximum is meant to be 10), glitches will occur when the mail box is opened.
Effects in Pokémon Gold and Silver include:
- Corruption of the overworld.
- A changed walking animation.
- Corruption of the start menu options.
- A corrupted wild Pokémon, and a forced 'link battle'.
Obtaining glitch mail
More research is needed for this article.
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Reason given: Check validity of other methods. |
This effect is not too uncommon and can occur after cheating, but there is a way to get it without cheating.
Glitch mail in the player's box, and others effects such as a glitch Trainer House Trainer can be obtained with the Unown SRAM corruption glitch, which can be pulled off by viewing a certain glitch Unown in Unown Mode of the Pokédex.
Glitch Unown can be obtained with the ????? party overloading, and a working value that creates glitch mail is the hex:24 (5th Pokémon's Defense is 36 modulo 256) type.
Invalid glitch mail types
Many and possibly all but one invalid glitch mail types look like the Flower Mail but with the wrong colors. The color changes are different between Pokémon Gold/Silver and Pokémon Crystal.
| Type | Background color | Five-petal flower and border color | Four-petal flower and name field color | Oddish color |
|---|---|---|---|---|
| Flower Mail | Light green | Orange | Red | Red |
| General glitch mail type (Gold/Silver) | Purple | Green | White | Black |
| General glitch mail type (Crystal) | Light blue | Blue | Pink | Red |
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The general glitch mail type in Gold/Silver.
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The general glitch mail type in Crystal.
In Pokémon Gold and Silver, the hex:FF invalid glitch mail type simply loads a purple screen, but the game does not freeze and the player can return to the mail box.
In Pokémon Crystal, the hex:FF invalid glitch mail type causes a completely different effect. It forces an unexpected reset (but not a Glitch Dimension) and many values are corrupted from CFBB-E0A4 (corruption of values to hex:07 has only been reported as of yet). Many of these values are unchanged when the player selects 'continue' and bad effects on the game are noticeable from there, but no apparent corruption effects are noticeable when the player selects 'new game'
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See this thread for more information.