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List of glitches in Generation I

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List of glitches in Generation I.

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The Cut glitch can refer to two different glitches in Generation I involving the move Cut.

Standing on a tree

Red standing on top of the tree outside Vermilion Gym

This glitch causes the player to appear on top of a cuttable tree. In order to perform the glitch, the player must have the Cascade Badge and a party Pokémon that knows Cut.

If, upon cutting down the tree, the player saves the game while standing in the spot where the tree originally stood before being cut down, and turns off the power, the player will be standing on top of a tree when the game is reloaded.


This glitch occurs because in Generation I, these trees are part of the map tiles. Since the save system did not store the changes to the map tiles on screen, this caused the maps to be fully rendered without changes upon game load. However, in Generation II, an exception was implemented so if any tile on screen had changed from default before the game save, it was saved too.

Due to an overhaul in Generation III, the glitch is no longer present. In this generation onwards, these trees are no longer map tiles, but actors (much like NPCs), and the save file is now able to remember the state and position of all actors.

Invisible tree

This glitch involves a tree near the bottom of Route 14.

If this particular tree is cut down and then the player walks five steps west from where the tree was (so that the spot where the tree used to be is at the edge of the screen) and then walks back their path will be blocked as if a tree was still there. Even though the tree is not visible, it can still be cut down normally.


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Cloning glitchesGlitch PokémonGlitch Trainers
Error messagesArbitrary code execution
Generation I: --0 ERRORCable Club escape glitchExperience underflow glitchFight Safari Zone Pokémon trick* • Glitch City
Item duplication glitchItem underflowMew glitchOld man glitchPewter Gym skip glitch
Pokémon merge glitchRhydon glitchSelect glitches (dokokashira door glitch, second type glitch)
Super GlitchTime Capsule exploitZZAZZ glitch
Generation II: Celebi Egg glitchCoin Case glitchesExperience underflow glitchGlitch dimension
Glitch EggSketch glitchTeru-samaTime Capsule exploitTrainer House glitches
Generation III: Berry glitch* • Dive glitchPomeg glitchGlitzer Popping
Generation IV: Acid rainGTS glitches* • Mimic glitch
Pomeg glitchRage glitchSurf glitch* • Tweaking
Generation V: Sky Drop glitch* • Frozen Zoroark glitch
Generation VI: Lumiose City save glitch*
Glitch effects: Game freezeGlitch battleGlitch song
Gens I/II only: Japanese characters in the international versions
Gen I only: Glitch screenTMTRAINER effectInverted sprites
Gen II only: Glitch dimension
Lists: Glitch movesGlitch types
Glitch Pokémon (Gen IGen IIGen IIIGen IVGen VGen VI)
Glitches (Gen IGen IIGen IIIGen IVGen VGen VISpin-off)

*Indicates glitches which have been officially acknowledged

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.