List of glitches (Generation II)
This is a list of glitches that occur in the Generation II Pokémon games.
Gold and Silver
NOTE: The following glitches affect all versions of Japanese Pokémon Gold and Silver (1.0 and 1.1) unless noted otherwise.
Bug-Catching Contest data copy glitch
- Main article: Bug-Catching Contest data copy glitch
In the Japanese versions of Pokémon Gold and Silver, if the player uses Fly or Teleport to leave the National Park during a Bug-Catching Contest, the game creates unstable Pokémon data.
This glitch was fixed in the international releases and in all versions of Pokémon Crystal.
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Coin Case glitches
- Main article: Coin Case glitches
The Coin Case glitches are a set of glitches which occur exclusively in the English versions of Pokémon Gold and Silver. They allow the player to run arbitrary code by exploiting an oversight in the process used by the game to print the text box data for the Coin Case.
These glitches do not work in the Japanese versions and other localizations or in Pokémon Crystal.
Present damage miscalculation
- Main article: Present (move)#Generation II
In Pokémon Gold and Silver, the move Present has a damage formula of its own due to a glitch. This causes the level, Attack, and Defense variables of the regular damage formula to be replaced. Thus, the move deals unusually large or small amounts of damage, depending on the Pokémon.
This glitch was fixed in Pokémon Stadium 2 and in Pokémon Crystal but it still occurs in the latter during Link battles to preserve backwards compatibility.
Thick Club effect error
If a Marowak with an Attack stat equal or higher than 256 uses Swords Dance while holding a Thick Club, its Attack will be reduced by 1024 (minimum 1) during damage calculation only. This happens as a consequence of an oversight that causes the temporary Attack boost from Thick Club to ignore the stat cap of 999 unlike other stat modifiers. During damage calculation, both the attacker's (Special) Attack stat and the defender's (Special) Defense stat are modded by 256, and, prior to that, if either is higher than 255, both are temporarily divided by 4. Thus, stats that are equal or higher than 1024 (256×4) will be treated wrongly.
This glitch was fixed in Pokémon Stadium 2 and in Pokémon Crystal but it still occurs in the latter during Link battles to preserve backwards compatibility.
This behavior also applies to Pikachu holding Light Ball and to Ditto holding Metal Powder. However, these Pokémon need to receive boosts from a Pokémon that knows Baton Pass in order to be able to reach a stat of at least 1024.
Trainer House corruption
- Main article: Trainer House glitch
This glitch affects the Trainer in the Trainer House and is caused by corrupted RAM for the save file in Pokémon Gold and Silver.
Crystal
NOTE: The following glitches affect all versions of English Pokémon Crystal (1.0 and 1.1) unless noted otherwise.
Legendary beast Pokédex cry distortion
This glitch is in need of research. Reason: Does it also occur in Gold and Silver? You can discuss this on the talk page. |
When the player checks Entei's Pokédex entry, plays its cry, and then immediately switches to either Suicune's or Raikou's entries, their cry will be distorted.
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Overworld player sprite miscoloration
This glitch affects the color of the player's overworld sprite, switching it between Ethan's red and Kris' blue palettes. It is caused by creating a save file as either Ethan or Kris, then overwriting it with another save file using the other player character but turning the game off while the new data is being saved. The effect disappears after saving and rebooting the game (note that the old save file will be overwritten).
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In all core series games
NOTE: The following glitches affect all versions of Japanese Pokémon Gold and Silver (1.0 and 1.1) and of English Pokémon Crystal (1.0 and 1.1) unless noted otherwise.
Belly Drum effect error
When a Pokemon uses Belly Drum, its HP is deducted by 50% and its Attack stat raised by up to 12 stages, ensuring that even the Attack stat of a Pokemon with an Attack stage of -6 can be maximized. This is accomplished through executing the command used by Swords Dance by a maximum of 6 times; however, the command is erroneously called once before verifying that HP of the user can be deducted by 50%. This means that if the user doesn't have enough HP to use the move, the Attack stat will be incorrectly boosted by 2 stages. The game will state that the attack has failed.
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Catch rate errors
There are four minor bugs in the catch rate formula, all of them as a consequence of programming oversights.
The status conditions of paralysis, burn, and poison, increase the catch rate by 0 as opposed to by 5 as it was intended.
The Love Ball only gains a catch rate of 8× on Pokémon of the same gender and species as the player's Pokémon, rather than on Pokémon of the opposite gender.
The Moon Ball was intended to multiply the catch rate by 4 on Pokemon that evolve with Moon Stone, but was erroneously programmed to apply this effect on Pokémon that evolve with Burn Heal instead. Subsequently, Moon Ball does not have any additional effect and always acts like a Poké Ball.
The Fast Ball only quadruples the catch rate against the first three of all fleeing Pokémon: Magnemite, Grimer, and Tangela.
Celebi Egg glitch
- Main article: Celebi Egg glitch
Ditto assumption
In Generation I and II, any Pokémon that uses Transform is regarded as a Ditto in its new form; this means that if the player catches a Mew or a glitch Pokémon which has used the move Transform or a Pokémon which has used Transform via Mirror Move, instead they will obtain a Ditto.
Mew turning into Ditto is not an issue because wild Mew cannot be legitimately encountered. With the overhaul of the mechanics in Generation III, wild Mew are able to legitimately encountered. Nonetheless, the glitch is also no longer a concern because it too was fixed in Generation III.
Dragon Fang glitch
Due to a bug, the Dragon Scale boosts the power of Dragon-type moves rather than the Dragon Fang.
This glitch was fixed in Pokémon Stadium 2.
A Pokémon with the same original Trainer as the player that is sent into battle with an Exp. Share held will gain 50% of the experience twice, which, due to rounding, may not equal 100%.
Experience underflow
- Main article: Experience#Experience underflow glitch
In Generation I and II, level 1 Pokémon using the "medium-slow" growth algorithm will jump from level 1 to level 100 after gaining a low amount of experience points (less than 54 if the total experience is 0).
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Five-digit experience amount oversight
A Pokémon that gains an amount of experience consisting of five digits will not have the number displayed correctly. Furthermore, such scenario is only possible in the Trainer House. The lowest level required for achieving such feat is 82 for Pokémon with an experience yield of 255, and the lowest experience yield with which this is feasible with is 208. Performing the glitch also requires an outsider Pokémon with a Lucky Egg.
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Interregional Teleport quirk
If the player travels to either Kanto or Johto in the S.S. Aqua and then teleports, he or she will be taken to either the Vermilion or Olivine Pokémon Center as opposed to the last Pokémon Center they used in either region. This does not occur with the Magnet Train. If the player loses a battle during their trip, they will be sent to their cabin instead.
In Pokémon HeartGold and SoulSilver, teleporting after travelling in either Magnet Train or S.S. Aqua behaves properly by returning the player to the last Pokémon Center used. This also applies to lost battles during the trip.
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Leveling past 100
In Generation I and II, if a Pokémon is obtained at a level above 100 (101–254), it can be leveled up with Rare Candies up to level 255. If a Rare Candy is fed to a level 255 Pokémon, its level will reset to 0. If a Pokémon above level 100 levels up due to experience, its level will be reset to 100.
Park Ball graphics corruption
If the Park Ball is used from the Ball pocket of the player's Bag on a wild Pokémon, the game will not reload the graphics on the battle screen, causing a temporary glitch in which part of both the Bag and battle screens mix up until the Pokémon catching animation is over, at which point the game will show the battle screen being reloaded.
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Pokémon Storage System cloning
- Main article: Cloning glitches#Storage system method
Shiny switch glitch
If a transformed Pokémon defeats a Trainer's Pokémon and the player switches it out to a Shiny Pokémon when prompted to, the transformed Pokémon will have a Shiny pallette while being switched. This does not happen if player switches Pokémon normally.
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Sketch glitches
- Main article: Sketch glitch
Trade cloning
- Main article: Cloning glitches#Trading method
Glitches involving communication with the Generation I games
Johto guard bypassing
- Main article: Johto guard glitch
Shiny Ditto DV manipulation
The Shiny Ditto glitch requires a game from both Generation I and II but it only has an effect on a Generation II game. In Generation I, if a Pokémon uses the move Transform while already transformed, it will retain the DVs of the Pokémon it transformed into after being caught. Due to Shininess being determined by DVs in Generation II, this allows the player to make a wild Ditto Shiny by having it use Transform while already transformed; accomplishing this is possible by either having a Shiny Pokémon that knows Transform (Mew, certain glitch Pokémon, or another Ditto) or by teaching a Shiny Pokémon the move Mimic, then having the wild Ditto use Mimic on the move Transform. The end result is that the Ditto will be Shiny in the Generation II game.
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Trade evolution learnset oversight
Generation I Pokémon that evolve by trading can be taught glitch moves through this glitch. This can be achieved by trading such Pokémon from a Generation I game to a Generation II game at a level where its evolved form will learn a move not present in Generation I. Trading the Pokémon back to the Generation I game will cause the move to become a glitch move.
For example, trading a level 34 Graveler from Pokémon Red to Pokémon Gold will cause the Graveler to evolve into Golem. Since it is at level 34, it will learn Rollout in Gold. If it is then traded back to Red, it will still have the move but the game won't recognize it properly since it is a Generation II move, so it will become TM05.
Stadium 2
Infinite continues glitch
This is a glitch that can be performed in Pokémon Stadium 2 with any Stadium Cup. It does not work in the original Pokémon Stadium. If there is a previously suspended game and the player is playing the Stadium Cup, suspending the game after a loss causes a warning message to pop up, telling the player that there is already a suspended game. If "Continue without Suspending" is selected, a rematch with the opponent who just defeated the player will be triggered, but no continue will be used.
Pokémon Blue Pokedex oversight
Due to a localization oversight, in the English version of Pokémon Stadium 2. Inserting a Pokémon Blue Game Pak and looking up wild Pokémon locations in the Pokedex will show the wild Pokémon locations from Japanese Blue.
This glitch Pokémon article is part of Project GlitchDex, a Bulbapedia project that aims to write comprehensive articles on glitches in the Pokémon games. |