Glitch name | Games | Exploit/nature |
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2x2 block encounter glitches | Pokémon Red and Blue (English, French, German) | Viridian Forest no encounter grass tiles glitch: Disable encounters. Left-facing shore tile glitch: Encounter unintended Pokémon and Trainers; old man trick; in-game trade shore encounter trick, trade link up shore encounter glitch, fight Safari Zone Pokémon trick. |
99 item stack glitch | Pokémon Red and Blue (English, Japanese), Yellow (Japanese) | Data corruption: Change badges, break an exit mat, warp. |
Activating events while facing the wrong way | Pokémon Red, Green, Blue, Yellow | Talk to people from the wrong side, activate a PC from the wrong side, temporarily destroy objects other than the Card Key (Red, Green, Blue JP) |
Amazing Man | Pokémon Red and Blue | Unexpected NPC sprite placement. |
Articuno binoculars cry glitch | Pokémon Red, Green, Blue (Japanese), German Blue | Articuno cry audio distortion; make Articuno's cry sound like Nidoking. |
Bicycle music hole glitch | Pokémon Red and Blue | Have the Bicycle music play while walking. |
Bide fainted Pokémon damage accumulation glitch | Pokémon Red, Blue, Yellow | A glitch involving faulty Bide damage programming (for accumulated Bide damage) for when a Pokémon faints. It can result in a desync in a link battle. |
Bide non-damaging move/action damage accumulation glitch | Pokémon Red, Blue, Yellow | A glitch in which Bide damage from the previous attacking move is accumulated even if a specific non-damaging move (such as Conversion) was used. |
Bide sprite glitch | Pokémon Red, Blue, Yellow | Reveal the sprite of a Pokémon that used Fly or Dig early; cause an animation error after attacking a Pokémon that used Dig with Bide damage. |
Bike Shop instant text glitch | Pokémon Red and Blue | Temporarily gain access to instant text until the next menu, Pokémon Center or Yes/No box. |
Blaine Super Potion glitch | Pokémon Red and Blue | Blaine can use a Super Potion on his Pokémon even if it has full HP. |
Boulder switch glitch | Pokémon Yellow (Japanese) v1.0, Rev A, Rev B | Having the walking Pikachu stand on any of the boulder switches in Victory Road except for the one on 1F can remove the relevant wall(s) as if the player pushed a boulder on to the switch. Fixed in "Rev 3" and the localizations. |
Broken hidden items glitch | Pokémon Red and Green (Japanese) | Hidden items become unobtainable by the Itemfinder, or the Itemfinder detects a hidden item at the wrong place (even if it does not exist); exploit: bring a select few hidden items back by passing over a fossil. |
Cable Club escape glitch | Pokémon Red and Blue, Yellow (not a natural glitch in Yellow) | Battle another Trainer's Pokémon outside of the Cable Club; battle a glitch Trainer roster; use another Trainer's glitch Pokémon for item duplication, item conversion or number of items expansion; use another Trainer's name for left-facing shore tile glitch yields; get the Reset button outside the Cable Club. |
Cable Club Glitch City transition | Pokémon Yellow | See a momentary Glitch City/split Cable Club room. |
Closed menu Select glitch | Pokémon Red, Green, Blue (Japanese) | (Japanese Red, Green, Blue): Swapping Pokémon and/or moves from on or beyond the end slot and the memory corruptions based on this (e.g. dokokashira door glitch, fossil conversion glitch); (Red/Green v1.0): Partial switch glitch. |
Coastal Flooding | Pokémon Red and Blue | Incorrect border tile appearance. |
Confusion and Substitute glitch | Pokémon Red, Blue, Yellow | Deal damage to another Pokémon's Substitute when a Pokémon under a Substitute hurts itself in confusion. |
Counter glitches | Pokémon Red, Blue, Yellow | “Counter a healing item” (both the user and foe), the opponent “counter your switch”, counter a selected move which wasn't used one one side and desync a Link Battle. |
Cycling Road sign glitch | Pokémon Red, Blue, Yellow | Cannot read a sign due to being on the wrong map. |
Disappearing NPC glitch | Pokémon Red, Blue, Yellow | Make an NPC disappear by going to another map where they do not exist. |
Dual-type damage misinformation | Pokémon Red, Blue, Yellow | Have the game give the wrong effectiveness message for a dual-typed Pokémon. |
Empty party glitch | Pokémon Red, Green, Blue (Japanese) | Open the Pokémon menu with no Pokémon. |
Escape sprite handling glitch | Pokémon Red, Green, Blue, Yellow | See the player's sprite temporarily replaced with a flipped "ABCD" square (or flipped "アイウエ" square in Japanese versions) if not playing in Super Game Boy mode after Teleport, Dig or using an Escape Rope. |
Evolve without an evolutionary stone | Pokémon Red and Blue | Evolve Pokémon without an evolutionary stone. |
Exp. All glitch | Pokémon Red, Blue, Yellow | An apparent discrepancy in experience gained by Pokémon with an Exp. All due to the experience being based on one Pokémon rather than all Pokémon. |
Freeze top move selection glitch | Pokémon Red, Blue, Yellow | Use the first move automatically even if it has 0 PP, obtain 63 PP on the move with full PP Ups applied, possibly remove a PP Up. (link battle glitch) |
Get stuck in a wall | Pokémon Red, Blue, Yellow | Become trapped in a wall and be forced to reset, have the player walk through walls when being guided, have Oak walk through the Pallet Town lady. |
Ghost Bicycle glitch | Pokémon Red, Blue, Yellow | Prevent using the Bicycle and Surfing via a Pokémon outside of Cycling Road. |
Go on Cycling Road without a Bicycle | Pokémon Red, Blue, Yellow | Enter Cycling Road without a Bicycle. |
Go past the Marowak ghost without a Silph Scope | Pokémon Red, Blue, Yellow | Skip obtaining the Silph Scope in Rocket HQ (normally intended to get past the Marowak ghost). |
Haze glitch | Pokémon Red and Blue | Cause a Pokémon thawed out from the Freeze status to still be unable to move due to a Hyper Beam recharge turn. |
Hyper Beam automatic selection glitch | Pokémon Red, Blue, Yellow | Use Hyper Beam twice in a row, obtain 63 PP on Hyper Beam with full PP Ups, remove a PP Up. |
Hyper Beam sleep move glitch | Pokémon Red, Blue, Yellow | Have a Pokémon that used Hyper Beam always fall asleep even if it has a status. |
Infinite Blaine Door | Pokémon Red, Blue, Yellow | Become temporarily trapped. |
Introduction Nidorino glitch | Pokémon Red, Green, Blue, Yellow | Unintended Pokémon cry (Nidorina instead of Nidorino). |
Invisible PC | Pokémon Red and Blue | Access an invisible PC. |
Invisible Tree | Pokémon Red and Blue | Have a tree reappear, but invisible. |
Invulnerability glitch | Pokémon Red, Blue, Yellow | Avoid all damage except possibly from Swift, Transform, Bide(?). |
Item jingle skip | Pokémon Red, Green, Blue (Japanese, English), Yellow (Japanese) | Obtain a Full Restore without the obtained sound effect, save some slight time. |
Landing on an NPC | Pokémon Red, Blue, Yellow | Have Red appear over an NPC. |
Leech Seed and Toxic stacking | Pokémon Red, Blue, Yellow | Have Leech Seed's damage increase every turn like Toxic. |
Level up Transform glitch | Pokémon Red, Blue, Yellow | Temporarily gain back the original moves of a transformed Pokémon that levelled up. |
Lift Key above ball glitch | Pokémon Red and Blue | Stand on top of the Lift Key item ball in Rocket HQ. |
Magikarp salesman glitch | Pokémon Red, Green, Blue (Japanese) | Have 500 Pokédollars taken off you for a Magikarp but not getting the Magikarp. |
Minimize and Substitute glitch | Pokémon Red and Blue | Cause sprites to change after viewing the status of a Pokémon after the opponent uses Minimize. |
Mr. Fuji's house door glitch | Pokémon Red, Blue, Yellow | Be blocked when trying to leave Mr. Fuji's house door. |
Mute Fuchsia City or Cerulean City | Pokémon Red, Blue, Yellow | Mute Fucshia City or Cerulean City. |
Mute the music in the Pokémon League | Pokémon Red, Blue, Yellow | Mute Blue's room in the Hall of Fame. |
NPC binoculars glitch | Pokémon Red, Blue, Yellow | Prevent NPCs from moving by holding down A. |
NPC collision bypassing glitches | Pokémon Red and Blue | Have an NPC ignore collisions with other objects in their movement. |
NPC moonwalk glitch | Pokémon Red and Blue | Have an NPC walk backwards. |
NPC walking behavior glitches | Pokémon Red and Blue | Limit an NPC's movement when it moves too far, and eventually make it completely stuck; (in Japanese versions only) trap the player against an NPC; limit an NPC's movement when it is on the right or bottom border of the screen. |
Oak's Parcel prevented progress glitch | Pokémon Red and Green (Japanese), Pokémon Yellow (not a natural glitch) | Prevent game progress past Viridian City. |
Old man full box glitch | Pokémon Red, Green, Blue (Japanese) | Have the old man fail to catch Weedle due to the full box message. |
Partial trapping move Mirror Move link battle glitch | Pokémon Red and Blue | Cause Link Battle desyncronization. |
Partial trapping move wrong side fainting glitch | Pokémon Red and Green v1.1 | Faint the user with more than 0 HP but be able to send it out again with the HP it previously had. Cause Link Battle desyncronization. |
Pewter Gym skip glitch | Pokémon Red and Blue | Continue without the first badge; Brock Through Walls. |
Pikachu desync glitch | Pokémon Yellow | Force Pikachu more than one step away from the player, and not directly following the player. |
Pikachu off-screen glitch | Pokémon Yellow | Pikachu happiness corruption; Pokémon emotion forcing; map corruption; freezing the game; NPC movement manipulation; corruption of a Trainer class and roster from the overworld; sign corruption; arbitrary code execution. |
Poké Mart no items sell map corruption glitch | Pokémon Red, Green, Blue, Yellow (Japanese) | Temporarily corrupt the tilemap of a Poké Mart. |
Pokémon cloning (Generation I) | Pokémon Red, Green, Blue, Yellow | Obtain a copy of an existing Pokémon. |
Pokémon switch message glitch | | Have the incorrect switch message appear, provided the foe gains more HP than it lost before the user switches Pokémon. |
Pokémon Tower Pokédex glitch | Pokémon Red, Blue, Yellow | Register a Pokémon in the Pokédex without it appearing fully. |
PP restore glitch | Pokémon Red, Blue, Yellow | Restore PP even when PP is at its maximum (for no effect). |
Professor Oak's lab music glitch | Pokémon Red and Blue | Have a simplified, slower version of Professor Oak's lab music play instead of the intended music. |
Professor Oak's lab tilemap corruption glitch | Pokémon Red and Blue | Make the player and Blue invisible, causing temporary tile columns to appear when opening the menu. |
Psychic/Psywave/Night Shade animation glitch | Pokémon Red, Blue, Yellow | The row of the top three pixels on the screen do not shake. |
Psywave desync glitch | Pokémon Red, Blue, Yellow | Desynchronize a Link Battle. |
Recovery move glitch | Pokémon Red, Blue, Yellow | Have Softboiled, Recover or Rest fail. |
Reflect/Light Screen stat overflow glitch | Pokémon Red, Blue, Yellow | Have a move freeze the game due to a Pokémon having excessive defensive stat (1024 or 1026) or deal much less damage than it is supposed to for other stats greater than 1023. |
Safari Zone exit glitch | Pokémon Red, Blue, Yellow | Access Glitch Cities |
Saffron Gym glitch | Pokémon Red and Green (Japanese) | Obtain the Marsh Badge by losing to Sabrina. |
Save A button held glitch | Pokémon Red, Green, Blue, Yellow | Keep the start menu up after saving for as long as the A button is held down. |
Seafoam Islands glitch text boxes | Pokémon Red, Green, Blue (Japanese) | Display glitch dialog, have the game reset itself, slow down menus. |
See a Ghost without a Silph Scope | Pokémon Red, Blue, Yellow | Identify a Silph Scope ghost without the Silph Scope, but have it still act as the Silph Scope ghost. |
Selfdestruct and Substitute glitch | Pokémon Red, Blue, Yellow | Remove a Pokémon's sprite, use Selfdestruct or Explosion but not faint. |
Silph Co. 11F above lift door glitch | Pokémon Red and Blue | Be blocked when trying to leave the Silph Co.'s 11F. |
Silph Co. PC glitch | Pokémon Red and Blue | Create a Glitch City in Silph Co. |
Slot machine glitch | | A bug that prevents intended behavior for a slot machine wheel in the Celadon Game Corner to stop advancing when a 7 appears on the first wheel or a maximum of four re-rolls is reached. |
Special menu Select glitch | Pokémon Red, Green, Blue (Japanese) | Lift glitch, badge describer glitch and the memory corruptions based on this. |
SRAM glitch | Pokémon Red, Blue, Yellow | Start a new game with 255 Pokémon; start a new game with Pokémon from the previous save file; start a new game with Pokémon from a corrupted save file. |
Stand on a tree | Pokémon Red and Blue | Stand on top of a cuttable tree. |
Stat modification glitches | Pokémon Red, Blue, Yellow | Errors related to how stat bonuses and penalties work together (e.g. badge boosts, using Agility when paralyzed). |
Statue behavior glitch | Pokémon Red and Blue | Surf and fish through statues. |
Substitute drain move not missing glitch | English Pokémon Red, Blue, Yellow | Drain moves on a Substitute were intended to miss and miss in Japanese versions and Gold/Silver/Crystal, but due to a glitch may not miss in the English versions. |
Substitute ¼ HP glitch | Pokémon Red, Blue, Yellow | Use Substitute to faint a Pokémon. |
Super effective move AI flaw | Pokémon Red, Blue, Yellow | Have the foe locked on a non-damaging move. |
Surf down glitch | Pokémon Red, Blue, Yellow | Surf through an impassable tile or non-water tile |
Surf from a cliff | Pokémon Red and Green (Japanese) | Surf from raised ground, skip the Seafoam Islands boulder puzzle. |
Swapping Transform moves glitch | Pokémon Red and Blue | Obtain “-” as the first move for CoolTrainer corruption glitches. |
Swift miss glitch | Pokémon Red and Green (JP) | The move Swift doesn't always hit in Japanese versions. |
Switch PP underflow glitch | Pokémon Red, Blue, Yellow | Auto select a partial trapping move, obtain 63 PP Up on a partial trapping move with full PP Ups applied, remove a PP Up. |
Text errors | Pokémon Red, Blue, Yellow | See unintended typos, formatting errors or localization text errors e.g. an 'evolving Raichu'. |
Trade evolution Time Capsule glitch | Pokémon Red, Blue, Yellow (with a Generation II game) | Obtain glitch moves via moves a trade evolution Pokémon learns exclusive to Generation II. |
Trainer Card transition screens | Pokémon Red and Blue | Have a glitchy screen show momentarily before opening the Trainer Card on a regular Game Boy (DMG mode). |
Trainer escape glitch | Pokémon Red, Green, Blue, Yellow | Disable Start and battles, encounter unintended Pokémon and Trainers, access unintended scripts. |
Transform PP restore glitch | Pokémon Red and Blue | Have a PP restore item work as if it was restoring an original move's PP rather than the move under Transform. |
Trapped in Pokémon Mansion oversight | Pokémon Red, Blue, Yellow | Become blocked in the Pokémon Mansion. |
Trapping move and sleep glitch | Pokémon Red, Blue, Yellow | Make it never a Pokémon's turn while it is asleep. |
Vending machine purchase glitch | Pokémon Red, Green, Blue, Yellow | Buy a Soda Pop or Lemonade from a vending machine with less than 300 or 350 Pokédollars but more than 199 Pokédollars. |
Walk around with only fainted Pokémon | Pokémon Red and Blue | Receive a black out easily; enter a battle and immediately lose (if black out delayed by saving and resetting or with “il” (hex:6D)). |
Walk on water through Surf | Pokémon Red and Blue | Stand on a water tile. |
Walking Pikachu happiness glitch | Pokémon Yellow | Increase Pikachu's happiness quickly and easily. |