Glitch item: Difference between revisions
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{{Arbitrary code execution}}
'''Glitch items''' are invalid items in the Pokémon games. Unavailable items such as {{FRLG}} key items in {{Emerald}} may also be considered to be glitch items, as well as unused/unavailable items such as ????? (hex:07) and BoulderBadge (hex:15) — see [[unused items]].
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===In {{RGBY}}===
Glitch items occupy [[index numbers]] hex:00, hex:54 through to hex:C3 and hex:FB through to hex:FF.
Types of glitch items:
*[[Unterminated name glitch item]]s: These are items without a 0x50 byte in the first 20 characters of their name. They can be used for various [[buffer overflow]] techniques with specific tiles on the screen. When the A-Button is pressed on them without a [[0x50 sub-tile]] present on the screen, it is most likely the game will freeze.
*Lag name glitch items: These cause the items list to temporary freeze until the player taps A or B a specific number of times while scrolling up/down. It is advised to tap B instead of A due to the risk of a game freeze from an unterminated name glitch item, which could freeze the game, and potentially destroy the save data, especially on Nintendo 3DS Virtual Console versions.
*[[Rival's effect]] glitch items: These glitch items are capable of causing the Rival's effect; an effect that opens a menu and allows the player to walk through impassable tiles once it is closed with B.
*[[Partial escape glitch item]]s: These allow for the player to partially escape from a wild battle, or restart a Trainer battle.
*[[:Category:Screen data saving glitch items|Screen data saving glitch items]]: These allow for the player to create a copy of the screen while the items menu is open, which is useful for [[Rival LOL glitch]] or a similar glitch.
*String printing glitch items: These may include a variable string in the item's name
*[[Map distortion glitch item]]s: Documented by TheZZAZZGlitch, these glitch items have the capability of corrupting the map when their name is shown, in an area with a lot of grass. A player name that is four characters long or more is also required.
*[[Arbitrary code execution]] glitch items: These glitch items do not have hard coded effects; instead the effects are sourced from a pointer in rewritable memory, such as [[RAM]]. Depending on the source pointer, it is possible to manipulate the item to do almost anything in game. [[ItemDex/RB:093|8F (0x5D)]] and [[ItemDex/Y:099|ws m (0x63)]] are infamous examples in the English versions.
*RAM name glitch items: These are glitch items with randomized names. They are not known to exist in the English versions, but an example is [[ItemDexJP/B:000]] from {{JB}}.
How to obtain glitch items:
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{|
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{| class="wikitable sortable"
| Name || Index number (hexadecimal) || Index number (decimal) || Game || Uses
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| [[ItemDex/Y:000|#×##]] || 00 || 0 || Pokémon Yellow || One of the most common glitch items, which can be sold for a high price of 414925 Pokédollars.
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| [[
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| [[4F (disambiguation)|4F]] || 59 || 89 || Pokémon Red, Blue, Yellow || Arbitrary code execution (initially runs FA65 in the Echo RAM region, equivalent to DA65 in Day Care data)
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| [[ItemDex/Y:110|Lg-]] || 6E || 110 || Pokémon Yellow || Restart a Trainer battle. Partially escape from a wild battle (useful for [[LOL glitch]]). Make walking Pikachu stay (useful for Pikachu off-screen glitch).
|-
| [[
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| [[ItemDex/RB:120|(blank)]] || 78 || 120 || Pokémon Red and Blue || Restart the music. Change to an overworld (02, 1F) sound bank from the sound bank (08). Play the music with ID at D35B with bank at D35C (D35B, D35C can be manipulated with expanded items pack).
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{|
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{| class="wikitable sortable"
! Hex ID !! Dec ID !! Item
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| 00 || 0 || [[?]]
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| 06, 19, 2D, 32, 38, 46 (G/S only), 5A, 64, 73 (G/S only), 74 (G/S only), 78, 81 (G/S only), 87, 88, 89, 8D, 8E, 91, 93, 94, 95, 99, 9A, 9B, A2, AB, B0, B3, BE || 5, 19, 45, 32, 38, 46 (G/S only), 90, 100, 115 (G/S only), 116 (G/S only), 120 (G/S only), 129 (G/S only), 135, 136, 137, 141, 142, 145, 147, 148, 149, 153, 154, 155, 162, 171, 176, 179, 190 || [[Unused items#Unused items in Generation II|Teru-
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| C3 || 195 || [[TM04 (useless)]]
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|}
Note that Teru-
====TMs and HMs outside of the correct pocket====
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Below are a number of useful TMs and HMs to use outside of the relevant pocket.
(Sources: [
{|
|-
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{| class="wikitable sortable"
! Hex ID !! Dec ID !! Item !! Version !! Use
|-
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===In {{RSE}}, {{FRLG}}===
There are many glitch items in these games named "[[????????]]" with no apparent use other than for arbitrary code execution setup. The hex:FFFF "????????" can be distinguished for having the 'return to menu' sprite as its sprite.
===In {{DPP}}, {{HGSS}}===
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==External links==
*[[ItemDex|Link to the ItemDex item database]].
==See also==
*[[Glitch decoration]]
[[Category:Generation I glitches]]
[[Category:Generation II glitches]]
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