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'''Glitches''' are anomalies in software programs, including video games. They can cause various problems ranging from the purely graphical to completely wiping entire chunks of saved data.
[[File:LM4 encounter.png|right|thumb|Encountering the glitch Pokémon [[ゥL ゥM 4]] by using the [[Mew glitch]]]]


They are usually caused by problems with a game's code, or from a player doing things the programmers did not anticipate, therefore causing the game to react unexpectedly. Below is a list of glitches in the Pokémon video games.
A '''glitch''', also known as '''bug''', is a software error that can lead to unintended behavior in software like the [[Pokémon games]]. It can be triggered from mistakes within the game's code or by exploits that were not anticipated by the programmers, thus causing the game to react unexpectedly. Glitches present in Pokémon games can have a variety of effects, such as the disruption of graphics or audio effects, the appearance of [[glitch Pokémon]], the corruption of [[save]] data, or a [[game freeze]] where the game must be restarted to continue.


==Major glitches==
When noticed, glitches may be fixed by its developers in later releases of a game or derivative games. In some games, such as {{game|Ruby and Sapphire|s}} and {{g|X and Y}}, {{wp|Patch (computing)|patch}}es are released that fix glitches in Pokémon games directly.
[[File:FemaleSymbol4.PNG|thumb|right|175px|A [[Graphical glitches|graphical glitch]] in [[Generation I]]]]
These are glitches which either affect all Pokémon games, or are considered to have a large affect on gameplay.


===All [[Generation]]s===
==Glitch Pokémon==
* '''[[Pokémon cloning]]:''' Variations of the Pokémon cloning trick exist in each [[Generation]] of the Pokémon games, each slightly different from one another. The most reliable version is in [[Generation III]]. This Pokémon cloning version allows players in the Emerald version to safely clone Pokémon, without any need for timing.
{{main|Glitch Pokémon}}
* '''[[Graphical glitches]]:''' Glitches that alter the aesthetics of the game, but have no other effects. This includes glitches such as the {{dl|Graphical glitches|honey shop glitch}}.
Glitch Pokémon are caused by glitches that have the game erroneously read placeholder data or non-Pokémon data as Pokémon data. Although many glitch Pokémon draw all their characteristics from data intended to be used elsewhere, some glitch Pokémon may have partially defined characteristics that are not intended to be accessed in-game: for example, in the case of [[MissingNo.]], its name is well-defined, but its [[base stat]]s are read from data intended to represent the parties of several {{tc|Biker}}s.


===[[Generation I]]===
==Glitch moves==
[[Image:Wildmew.jpg|thumb|right|A {{p|Mew}} being found in the wild due to the [[Mew glitch]]]]
{{main|Glitch move}}
* '''[[Glitch City]]:''' A glitch location consisting of mess of random map tiles that changes depending on the location where the player enters Glitch City.
A [[glitch move]] is a [[move]] not intended to be part of the game, but accessible via glitches or cheating devices. While some glitch moves have no effect whatsoever, others may cause the game to [[game freeze|freeze]] when attempting to perform them. Usually, only [[glitch Pokémon]] will learn glitch moves.
* '''[[Mew glitch]]:''' Allowing players to capture any Pokémon (most especially {{p|Mew}}) without modification, and allowing players to catch most of the glitched Pokémon.
* '''[[Old man glitch]]''': Allows encountering of Pokémon above level 100, as well as [['M]] and [[Missingno.]].
* '''[[Item duplication glitch]]''': By encountering [[Missingno.]] or [['M]], gives the player either 128 or 255 of the player's 6th item. Another item duplication glitch involves copying a stack of 255 of an item.
* '''Leveling past 100:''' If a Pokémon was caught at a level above 100, it could be leveled up with [[Rare Candy|Rare Candies]] up to level 255.


===[[Generation II]]===
In [[Generation I]], Ditto can be taught the glitch move {{m|--}} by {{DL|List of glitches (Generation I)|--|a glitch}}. Additionally, {{DL|List of glitches (Generation II)|Trade evolution learnset|another glitch}} present in the [[Time Capsule]] allows Pokémon that evolve by trading to be taught several glitch moves.
*'''[[Celebi egg trick]]''': Allows players to hatch as many {{p|Celebi}} as one desires using a number of steps.


===[[Generation III]]===
==Glitch types==
* '''[[Berry glitch]]''': Freezes the growth of any berries which have been planted but not harvested, often occurs after the game has been owned for a year or played for over 100 hours, though not always.
{{main|Glitch type}}
* '''[[Pomeg glitch]]''': In {{v|Emerald}}, using a [[Pomeg Berry]] on a Pokémon with low {{stat|HP}} may cause its HP to become a negative value. Using this, a player can cause other glitches.


===[[Generation IV]]===
[[Glitch type]]s are [[type]]s that are solely used for glitch Pokémon or glitch moves. The {{t|Bird}} type is a leftover type thought to be a beta version of the {{type|Flying}}. All other glitch types are caused by erroneously reading other data as a type. Unlike regular types, glitch types often do not have any weaknesses, resistances, or immunities.
[[Image:Tweaking Glitch.PNG|thumb|right|Tweaking]]
* '''[[Surf glitch]]:''' In early Japanese versions of {{v|Diamond and Pearl|s}}, {{m|Surf}} can be used on specific [[Elite Four]] members' doors, allowing the {{player}} to surf through the [[void]].
* '''[[Tweaking]]:''' This causes the game to fail to load the map and makes it appear black. Some cases have led the {{player}} to places such as [[Newmoon Island]] or [[Flower Paradise]] if the player walks in the correct direction.
* '''[[Acid rain]]''': In {{v2|Platinum}}, {{v2|HeartGold and SoulSilver|s}}, {{dl|Weather conditions|heavy rain}}, {{dl|Weather conditions|intense sunlight}}, a {{dl|Weather conditions|hailstorm}} and a {{dl|Weather conditions|sandstorm}} all occur on the battlefield when a Pokémon switching is knocked out with {{m|Pursuit}} during Hail or Sandstorm.
* '''[[Pomeg glitch]]''': In Pokémon Diamond, Pearl and Platinum Versions, using a [[Pomeg Berry]] on a Pokémon with low {{stat|HP}} may cause its HP to become a negative value. Using this, a player can cause other glitches.


==Minor glitches==
==Glitch locations==
{{main|List of minor glitches}}
There are several glitch locations which can only be reached by means of glitches or hacks. One of the most well known glitch locations is [[Glitch City]]. Several glitch locations part of the [[Sevii Islands]] are retrievable by their [[index number]] pointers and do not have any other data; only [[Pokémon FireRed and LeafGreen beta#Sevii Isles|Sevii Isles 8 and 9]] have actual map data. There are also other beta locations such as [[Pokémon Gold and Silver beta|an unused Safari Zone]] in [[Generation II]].
==={{game|Red and Blue|s}} and {{game|Red and Green|s}}===
* '''{{dl|List of minor glitches|Hall of Fame glitch}}:''' When Missingno. has been seen on the save file, the player's Hall Of Fame is badly corrupted with entirely different Pokémon (players can even see Mew in the Hall Of Fame, whether they've seen Mew or not) and very glitched characters and names.
* '''{{dl|List of minor glitches|Man on roof}}''': If one does not have the key to the Cinnabar Gym, and {{m|surf}}s on the east coast and returns to land directly in front of the gym, a man will appear on the roof of the gym. A similar effect happens if the player walks into the [[Vermilion City]] Gym, walks directly left and then up so that they are facing the bottom-left trash can and press A to inspect it, or if the player is in the gatehouse to Cycling Road. One of the trainers in the gym will be misplaced and return to his usual spot once the text box disappears, and when in the gatehouse there may be a man standing on an object somewhere behind the guard.
* '''{{dl|List of minor glitches|Prevented progress}}''': If one evolves their starter Pokémon before they obtain their [[Pokédex]] from [[Professor Oak]], the game will assume that, since they have 2 Pokémon registered as caught, that they already have a Pokédex, and will not allow them to proceed. This glitch is only present in the Japanese {{v|Red and Green|s}}.
* '''{{dl|List of minor glitches|Invisible PC}}''': There is a hotel in [[Celadon City]] that resembles a [[Pokémon Center]] on the inside. In the top-right space of the area that the player can walk on, there is an invisible, usable [[PC]].
* '''{{dl|List of minor glitches|Fishing in statues}}''': The player can use a [[Fishing|Fishing Rod]] when facing the right or left of a gym statue. It will always say "Looks like there's nothing in here...", except in [[Misty]]'s [[Cerulean Gym|gym]], where all the [[Pokémon]] obtainable in the gym can be caught.
*'''[[Q Glitch]]''': A glitch enabled by the Pokémon [[Q]] (and [[Charizard 'M]]) which allows Pokémon stored in the PC to swap moves and stats.
*'''[[ZZAZZ glitch]]''': A side effect of performing the [[Mew glitch]] using a Pokémon with a {{stat|special}} stat of 251, 252, 254 or 255. When this is done, a [[Glitch Trainer]] will appear. In the Red and Blue versions, after battling the Glitch Trainer, numerous abnormalities will occur, including the player's name being turned into "ZZAZZ" and 3 of the player's Pokémon being turned into {{p|Bulbasaur}}, which have learned the move {{m|Explosion}} in the 1st, 2nd and 4th move slots. It has been known to erase saved games.
* '''[[Cut glitch]]''': If the player cuts down a tree, stands on the spot, saves, turns the game off, then loads it, the player will be standing on a tree.
* '''{{dl|List of minor glitches|Level 1 Pokémon}}''' If the player uses a level 1 Pokémon in a [[Pokémon battle]] and it levels up it should skip straight to level 100, as long as that Pokémon is one of any fully-evolved Pokémon or {{p|Mew}}, as the algorithm for the experience to the next level for those Pokémon is glitched and takes the experience to level 2 as a large negative number (which displays as a large positive number).
* '''{{dl|List of minor glitches|Stuck in a wall}}''': If the player lures an [[NPC]] into the grass above [[Pallet Town]], she will block the player from following [[Professor Oak]] correctly, causing the player to become stuck in the wall of [[Professor Oak's Laboratory]].
* '''[[0 ERROR]]''': A glitch similar to the [[Mew glitch]] that causes [[Route 6]] to become glitched.
* '''[[Error codes]]''': In Pokémon Red and Blue, there are several error codes that appear when the game is not functioning correctly. Problems such as these often crop up when the game's memory access is corrupted or when experimenting with glitches such as the [[Mew glitch]]. Usually, when an error code appears, the game does not freeze and the player is allowed to continue playing the game without [[Soft resetting|resetting]]. Occasionally [[Error codes#Mixed errors|mixed errors]] occur.
* '''[[Dokokashira door glitch]]''': Involves switching the item data and the Pokémon data mid-battle, and causes the {{player}} to warp around in an exploitable manner.


==={{game2|Gold|Silver|Crystal}}===
==Glitch items==
* '''[[Coin Case glitches]]''': A series of glitches that cause visual or text glitches that involve the [[Coin Case]].
{{Main|List of unobtainable items}}
* '''{{dl|List of minor glitches|Shiny Ditto exploit}}''': By trading any [[shiny Pokémon]] to a [[Generation I]] game, having a wild {{p|Ditto}} transform into that Pokémon, then catching and trading the Ditto into a Generation II game, the Ditto will be shiny.
Placeholder items are often intentionally left in the game's code to prevent the game from crashing if the data is accessed, but without the intention to be accessible in-game. Placeholder items, such as the [[Teru-sama]] item in [[Generation II]], often appear at the end of the games' [[List of items by index number|internal item list]]s.
* '''[[Cut glitch]]''': If the {{player}} cuts down a tree, stands on the where the tree was, [[save]]s, turns off the power, and loads the game, the player will be standing on top of a tree.
*'''[[Error codes]]''': Error messages display problems encountered in the game, although are uncommon without the use of a [[cheating]] device.


==={{g|Stadium 2}}===
Placeholder items may become regular items in later games of a generation: The [[GS Ball]], [[Clear Bell]], and [[Egg Ticket]], which only appear in {{game|Crystal}}, are programmed into the games' {{gdis|List of items by index number|II|internal list}}s in places of Teru-sama items in {{game|Gold and Silver|s}}; if a corresponding Teru-sama is held by a Pokémon in those games, it will transform when being traded to Crystal.
* '''[[Infinite continues glitch]]''': A glitch allowing the player to get infinite continues in any [[Stadium Cup]].


==={{game|Ruby and Sapphire|s}}===
Glitch items that will become regular items in a later game appear in [[Generation II]] and [[Generation IV]]. In [[Generation III]], all items introduced in {{game|FireRed and LeafGreen|s}} or {{game|Emerald}} are stored in a section of the [[List of items by index number (Generation III)|internal item list]] that is not accessible in an earlier game. Except for the [[Griseous Orb]] (which replaces a glitch item from {{game|Diamond and Pearl|s}}), the same holds for all items introduced in {{game|Platinum}} and {{game|HeartGold and SoulSilver|s}}, as well as for all items introduced in games of a later generation.
* '''{{dl|List of minor glitches|Ledge glitch}}''': East of [[Mauville City]] there is an [[Aroma Lady]] that will battle the {{player}}. If the player stands right behind the ledge in her line of sight, she will see the player and walk onto the ledge and stay there until the player leaves the area. This does not happen in {{v2|Emerald}} due to her being a part of a double battle in the same area.
* '''{{dl|List of minor glitches|Thunder glitch}}''': The moves {{m|Thunderbolt}} and {{m|Thunder}}, when used in some Ruby and Sapphire cartridges, may cause the game to [[Game freeze|freeze]] or cause a sound effect to linger until the game is turned off.
* '''[[Roaming Pokémon Glitch]]''': A glitch that causes [[roaming Pokémon]] to have low IVs.  


==={{game|FireRed and LeafGreen|s}}===
==Glitch Trainers==
* '''[[Roaming Pokémon glitch]]''': A glitch that causes [[roaming Pokémon]] to have low IVs.
{{main|Glitch Trainer}}
* '''{{dl|Roaming Pokémon glitch|Roaming roar glitch}}''': If a [[roaming Pokémon]] uses {{m|Roar}} to flee from battle, it will permanently disappear from the game.
[[Glitch Trainer]]s exist in [[Generation I]] and [[Generation II]]. They result from the game erroneously reading Trainer or party information from game code that is supposed to contain other information.


===[[Pokémon Colosseum]]===
==Glitch characters==
* '''[[Colosseum Master Ball glitch]]''': Also known as the Infinite Ball Glitch; it is a glitch which involves switching the position of any [[Poké Ball]] on the same turn that it is selected to be used, so that the quantity does not decrease.
In [[Generation I]] and [[Generation II]], invalid values being interpreted as text (common in the names of glitch Pokémon and items) can cause portions of graphical assets, such as overworld tiles or HP bars, to be displayed as text.


==={{game|Diamond and Pearl|s}}===
==See also==
* '''{{dl|List of minor glitches|Egg nature glitch}}''': A well timed switch between boxes will allow the player to see the [[nature]], [[ability]], or [[type]] of the Pokémon inside an egg.
*[[List of glitches (Generation I)]]
* '''GTS {{dl|Global Terminal|Trade evolution glitch}}''': In a [[Generation IV]] game, if the player deposits any Pokémon on the GTS that can evolve through trade (holding any necessary items), and then either waits for over 24 hours before taking it back, or trades for another Pokémon before taking the first back, it will evolve after being received.
*[[List of glitches (Generation II)]]
* '''GTS {{dl|Global Terminal|Morphing glitch}}''': Causes Pokémon up for trade on the GTS to change species and hold a [[Seal Bag]].
*[[List of glitches (Generation III)]]
* '''GTS {{dl|Global Terminal|Vanishing glitch}}''': After uploading a Pokémon to the server and checking its summary without changing the Pokémon, the "summary" button is sometimes replaced with "deposit," suggesting that the Pokémon has been traded. Selecting "Deposit" will cause a communication error, and the player will return to the front desk. Logging on to the server again will cause the Pokémon to reappear, with no noticeable changes.
*[[List of glitches (Generation IV)]]
*[[List of glitches (Generation V)]]
*[[List of glitches (Generation VI)]]
*[[List of glitches (Generation VII)]]
*[[List of glitches (Generation VIII)]]
*[[List of glitches (Generation IX)]]


==={{game|Platinum}}===
{{Glitches}}<br>
*'''{{dl|List of minor glitches|Black Belt gibberish}}''': For unknown reasons, a certain {{OBP|Black Belt|Trainer class}} in {{si|Victory Road}} may speak glitchy gibberish upon defeat.
{{Project Glitchdex notice|no}}
* '''[[Pal Park#Manipulation|Pal Park glitch]]''': Allows the player to migrate any number of Pokémon via the [[Pal Park]], this is used to overcome the 6 Pokémon per 24 hours limit.
* '''GTS {{dl|Global Terminal|Level display glitch}}''': In some copies of Platinum, the [[level]]s of a Pokémon might not be displayed on the GTS. In order to fix this, the {{player}} must contact [[Nintendo]].
* '''GTS {{dl|Global Terminal|Trade evolution glitch}}''': In a [[Generation IV]] game, if the player deposits any Pokémon on the GTS that can evolve through trade (holding any necessary items), and then either waits for over 24 hours before taking it back, or trades for another Pokémon before taking the first back, it will evolve after being received.
* '''GTS {{dl|Global Terminal|Morphing glitch}}''': Causes Pokémon up for trade on the GTS to change species and hold a [[Seal Bag]].
* '''GTS {{dl|Global Terminal|Vanishing glitch}}''': After uploading a Pokémon to the server and checking its summary without changing the Pokémon, the "summary" button is sometimes replaced with "deposit," suggesting that the Pokémon has been traded. Selecting "Deposit" will cause a communication error, and the player will return to the front desk. Logging on to the server again will cause the Pokémon to reappear, with no noticeable changes.
 
==={{game|HeartGold and SoulSilver|s}}===
* '''GTS {{dl|Global Terminal|Trade evolution glitch}}''': In a [[Generation IV]] game, if the player deposits any Pokémon on the GTS that can evolve through trade (holding any necessary items), and then either waits for over 24 hours before taking it back, or trades for another Pokémon before taking the first back, it will evolve after being received.
* '''GTS {{dl|Global Terminal|Morphing glitch}}''': Causes Pokémon up for trade on the GTS to change species and hold a [[Seal Bag]].
* '''GTS {{dl|Global Terminal|Vanishing glitch}}''': After uploading a Pokémon to the server and checking its summary without changing the Pokémon, the "summary" button is sometimes replaced with "deposit," suggesting that the Pokémon has been traded. Selecting "Deposit" will cause a communication error, and the player will return to the front desk. Logging on to the server again will cause the Pokémon to reappear, with no noticeable changes.
* '''{{dl|List of minor glitches|Boulder glitch}}''': In the Japanese version of {{g|HeartGold and SoulSilver}}, a boulder in [[Slowpoke Well]] can be pushed into the water. The boulder (unlike in {{v|FireRed and LeafGreen|s}}) will act as if it was on dry land.
<!--*'''Poké Ball spin glitch''': Sometimes in Pokémon HeartGold or SoulSilver, when battling a trainer, a Poké Ball may keep spinning even after it is thrown. The only known way to fix this is to turn off the power.
Waiting for proof. A video would be good
-->
 
==Glitch Pokémon==
{{main|Glitch Pokémon}}
A glitch [[Pokémon]] is a Pokémon not intended to be part of the game, but can be accessed through the use of glitches. All glitch Pokémon are either filler data, the game attempting to read an empty hexadecimal address or exist from beta testing.
 
==Glitch characteristics==
===Glitch moves===
{{main|List of glitch moves}}
A glitch [[move]], is a move not intended to be part of the game, but can be accessed through the use of glitches. In [[Generation I]], many glitch moves are named after TMs or HMs; TMs numbered {{m|TM01|01}} to {{m|TM55|55}} and HMs numbered {{m|HM01|01}} to {{m|HM05|05}} exsist as moves. However, some have [[-- (move)|no name]] or a [[Super Glitch|glitched, unreadable name]]. Some glitch moves are of known glitch types, but others have either no readable type or an unknown type, and are often referred to collectively as "{{m|Super Glitch}}". Usually only glitch Pokémon will learn glitch attacks.
One way of teaching a Pokémon in [[Generation I]] a glitch move is trading to a [[Generation II]] game a Pokémon that will evolve by trading at a level when it will learn an attack in the next generation game, and then trading it back to the Generation I game. For example, trading a level 50 {{p|Haunter}} from {{game3|Red and Blue|Pokémon Red|s}} to {{game3|Gold and Silver|Pokémon Gold|s}} will make the Haunter evolve into {{p|Gengar}}.  Since it is level 50, it will learn {{m|Destiny Bond}}. If it is then traded back to Pokémon Red, it will still have the move, but the game won't recognize it properly since it is a Generation II move, so will become a glitch move.
 
===Glitch types===
{{main|List of glitch types}}
There are many different glitch types that are found to be the types of several glitch Pokémon and moves. The majority of them are used for very few Pokémon or moves.
 
===Glitch locations===
There are several locations which can only be reached by way of a glitch in the games. One of the most well known glitch locations is [[Glitch City]]. Other examples of this are areas in the [[Sevii Islands]] that are retrievable via their [[index number]] pointer, however, do not have any other data. [[Sevii Isles 8 and 9]] are the only index number areas which have actual map data. There are also other beta locations such as the [[Beta Safari Zone]].
 
===Glitch items===
Place-holder items are often left in the game's code to prevent it from crashing if the data is accessed, such as [[Teru-sama]] in [[Generation II]]. Other [[generation]]s likewise have placeholder items. The {{DL|List of key items in Generation II|Clear Bell}} and {{DL|List of key items in Generation II|GS Ball}} in {{v2|Crystal}} and the various newer items introduced just in {{game3|FireRed and LeafGreen|FireRed, LeafGreen|s}} and {{v2|Emerald}}, register as the place-holder items Teru-sama and mystery item if they are somehow moved into {{v2|Gold and Silver|s}} or [[Pokémon Ruby and Sapphire Versions|Ruby and Sapphire]] respectively. There is also the [[Seal Bag]], a removed item obtained in [[Generation IV]] from the GTS {{dl|Global Terminal|Morphing glitch}}.
 
===Glitch Trainers===
{{main|Glitch Trainer}}
[[Glitch Trainer]]s have been known to occur in [[Generation I]]. They are usually found if the player's name contains special characters and performs the [[Old man glitch]]. There are also several special stat numbers used in the [[Mew glitch]] which cause glitch trainers to appear, such as when the [[ZZAZZ glitch]] is triggered. Glitch Trainers may use [[glitch Pokémon]] in battle.


{{Glitches}}
{{-}}
{{Project Glitchdex notice}}
[[Category:Game mechanics]]
[[Category:Game mechanics]]
[[Category:Glitches|*]]
[[Category:Glitches|*]]


[[de:Bug]]
[[de:Bug]]
[[es:Glitch]]
[[fr:Bug]]
[[fr:Bug]]
[[ja:裏技・うわさ]]
[[it:Glitch]]
[[ja:裏技・バグ一覧]]
[[zh:遊戲漏洞]]

Latest revision as of 03:03, 15 December 2022

Encountering the glitch Pokémon ゥL ゥM 4 by using the Mew glitch

A glitch, also known as bug, is a software error that can lead to unintended behavior in software like the Pokémon games. It can be triggered from mistakes within the game's code or by exploits that were not anticipated by the programmers, thus causing the game to react unexpectedly. Glitches present in Pokémon games can have a variety of effects, such as the disruption of graphics or audio effects, the appearance of glitch Pokémon, the corruption of save data, or a game freeze where the game must be restarted to continue.

When noticed, glitches may be fixed by its developers in later releases of a game or derivative games. In some games, such as Pokémon Ruby and Sapphire and Pokémon X and Y, patches are released that fix glitches in Pokémon games directly.

Glitch Pokémon

Main article: Glitch Pokémon

Glitch Pokémon are caused by glitches that have the game erroneously read placeholder data or non-Pokémon data as Pokémon data. Although many glitch Pokémon draw all their characteristics from data intended to be used elsewhere, some glitch Pokémon may have partially defined characteristics that are not intended to be accessed in-game: for example, in the case of MissingNo., its name is well-defined, but its base stats are read from data intended to represent the parties of several Bikers.

Glitch moves

Main article: Glitch move

A glitch move is a move not intended to be part of the game, but accessible via glitches or cheating devices. While some glitch moves have no effect whatsoever, others may cause the game to freeze when attempting to perform them. Usually, only glitch Pokémon will learn glitch moves.

In Generation I, Ditto can be taught the glitch move -- by a glitch. Additionally, another glitch present in the Time Capsule allows Pokémon that evolve by trading to be taught several glitch moves.

Glitch types

Main article: Glitch type

Glitch types are types that are solely used for glitch Pokémon or glitch moves. The Bird type is a leftover type thought to be a beta version of the Flying-type. All other glitch types are caused by erroneously reading other data as a type. Unlike regular types, glitch types often do not have any weaknesses, resistances, or immunities.

Glitch locations

There are several glitch locations which can only be reached by means of glitches or hacks. One of the most well known glitch locations is Glitch City. Several glitch locations part of the Sevii Islands are retrievable by their index number pointers and do not have any other data; only Sevii Isles 8 and 9 have actual map data. There are also other beta locations such as an unused Safari Zone in Generation II.

Glitch items

Main article: List of unobtainable items

Placeholder items are often intentionally left in the game's code to prevent the game from crashing if the data is accessed, but without the intention to be accessible in-game. Placeholder items, such as the Teru-sama item in Generation II, often appear at the end of the games' internal item lists.

Placeholder items may become regular items in later games of a generation: The GS Ball, Clear Bell, and Egg Ticket, which only appear in Pokémon Crystal, are programmed into the games' internal lists in places of Teru-sama items in Pokémon Gold and Silver; if a corresponding Teru-sama is held by a Pokémon in those games, it will transform when being traded to Crystal.

Glitch items that will become regular items in a later game appear in Generation II and Generation IV. In Generation III, all items introduced in Pokémon FireRed and LeafGreen or Pokémon Emerald are stored in a section of the internal item list that is not accessible in an earlier game. Except for the Griseous Orb (which replaces a glitch item from Pokémon Diamond and Pearl), the same holds for all items introduced in Pokémon Platinum and Pokémon HeartGold and SoulSilver, as well as for all items introduced in games of a later generation.

Glitch Trainers

Main article: Glitch Trainer

Glitch Trainers exist in Generation I and Generation II. They result from the game erroneously reading Trainer or party information from game code that is supposed to contain other information.

Glitch characters

In Generation I and Generation II, invalid values being interpreted as text (common in the names of glitch Pokémon and items) can cause portions of graphical assets, such as overworld tiles or HP bars, to be displayed as text.

See also


Multiple
generations
Transform glitchesGlitch TrainersCloning glitchesError messagesArbitrary code execution
Generation I GlitchesBattle glitchesOverworld glitches
--0 ERRORBroken hidden itemsCable Club escape glitchDual-type damage misinformation
Experience underflow glitchFight Safari Zone Pokémon trickGlitch CityItem duplication glitchItem underflow
Mew glitchOld man glitchPewter Gym skip glitchPokémon merge glitchRhydon glitchRival twins glitch
Select glitches (dokokashira door glitch, second type glitch) • Super Glitch
Time Capsule exploitWalking through wallsZZAZZ glitch
Generation II GlitchesBattle glitches
Bug-Catching Contest glitchCelebi Egg glitchCoin Case glitchesExperience underflow glitch
Glitch dimensionGlitch EggTeru-samaTime Capsule exploitTrainer House glitchesGS Ball mail glitch
Generation III GlitchesBattle glitchesOverworld glitches
Berry glitchDive glitchPomeg glitchGlitzer Popping
Generation IV GlitchesBattle glitchesOverworld glitches
Acid rainGTS glitchesPomeg glitchRage glitch
Surf glitchTweakingPal Park Retire glitch
Generation V GlitchesBattle glitchesOverworld glitches
Charge Beam additional effect chance glitchCharge move replacement glitchChoice item lock glitch
Frozen Zoroark glitchSky Drop glitch
Generation VI GlitchesBattle glitchesOverworld glitches
Charge Beam additional effect chance glitchCharge move replacement glitchChoice item lock glitch
Lumiose City save glitchSymbiosis Eject Button glitchToxic sure-hit glitch
Generation VII GlitchesBattle glitches
Charge Beam additional effect chance glitchCharge move replacement glitchChoice item lock glitch
Toxic sure-hit glitchRollout storage glitch
Generation VIII Glitches
Charge Beam additional effect chance glitchCharge move replacement glitchChoice item lock glitch
Toxic sure-hit glitchRollout storage glitchParty item offset glitch
Generation IX Glitches
Glitch effects Game freezeGlitch battleGlitch song
Gen I only: Glitch screenTMTRAINER effectInverted sprite
Gen II only: Glitch dimension
Lists Glitches (GOMystery DungeonTCG GBSpin-off)
Glitch Pokémon (Gen IGen IIGen IIIGen IVGen VGen VIGen VIIGen VIII)
Glitch moves (Gen I) • Glitch types (Gen IGen II)


Project GlitchDex logo.png This article is part of Project GlitchDex, a Bulbapedia project that aims to write comprehensive articles on glitches in the Pokémon games.