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Instant LOL glitch
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Major glitches of the Pokémon series


GB.png Arbitrary code execution GB.png

0x1500 control code arbitrary code execution (Crystal) | Cart-swap arbitrary code execution | Generation I custom map script pointer | Generation I invalid meta-map scripts | Generation I item ("8F", "ws m", "-g m", "5かい", "てへ" etc.) | Generation I move ("-", "TM42") | Generation I Trainer escape glitch text boxes | Generation II bad clone | Generation II Burned Tower Silver | Japanese Crystal Pokémon Communication Center SRAM glitches | Coin Case glitch | Generation II glitch Pokédex sortings | Pikachu off-screen glitch ACE | OAM DMA hijacking | Pikachu glitch emote | Generation III glitch Pokémon summary | Generation III glitch move animation) | Remote code execution | TM/HMs outside of the TM/HM pocket | ZZAZZ glitch Trainer FC


Bulbasaur.png No further extensions Bulbasaur.png

Cloning | Item duplication glitch (Generation I) | Pokémon merge glitch ("Q Glitch", Generation I) | Time Capsule exploit | Bug-Catching Contest data copy glitch (Generation II, Japan only) | Berry glitch | Battle Tower Lati@s glitch (Generation III) | (Mimic) Transform Rage glitch (Generation IV)

Transform held item glitch (Generation IV, Japan only) | Mimic glitch (Generation IV, Japan only)


Bruno.png Buffer overflow techniques Bruno.png

99 item stack glitch | LOL glitch | Rival LOL glitch | Instant LOL glitch | RAM LOL glitch | Out of bounds LOL glitch | blockoobLG | Instant encounter infinite chain glitch | LGFly | Super Glitch (Generation I) | Party remaining HP glitch | Super Glitch (Generation III) | Text pointer manipulation mart buffer overflow glitch | CoolTrainer♀-type move | Double distort CoolTrainer♀ corruption | Yami Shop glitch | Party Pokémon box data shift glitch | Unterminated name glitch item instant encounter (Japanese Red/Green)


Ball.png Item stack duplication glitch (Generation I) Ball.png

Generation I expanded items pack (Glitch Rocket HQ maps, Map FE (English and non-English European Yellow) | Map script pointer manipulation (arbitrary code execution | Map script pointer item ball manipulation) | Text pointer manipulation (arbitrary code execution | Item ball manipulation | Mart buffer overflow) | Trainerless instant encounter glitch


PC.png Bad clone glitch (Generation II) PC.png

????? party overloading (Type 0xD0 move glitch | ????? map corruption | Celebi trick | Celebi Egg trick | Shiny Celebi trick | Glitch move map corruption | Overloaded party map corruption | Glitch Unown (Glitch Unown map corruption) | Duplicate key items glitch (Infinite items and item creation, Expanded Balls pocket (Wrong pocket TM/HMs, Glitch Pokédex categories))


Lab pass.png Closed menu Select glitches (Japanese Red/Green) Lab pass.png

Dokokashira door glitch (International) | Fossil conversion glitch (international) | Second type glitch | Skip to Level 100 glitch | Trainer mutation glitch | Walk through walls (International) | Lift glitch | Badge describer glitch


Gromeg berry.png Pomeg glitch (Generation III) Gromeg berry.png

Pomeg data corruption glitch ("Glitzer Popping") | Charm glitch


Darkrai.png Voiding (Generation IV) Darkrai.png

Tweaking

Broken escalator glitch (Japan only) | Elite Four door glitch (Japan only)


Lying old man.png 2x2 block encounter glitches (Generation I) Lying old man.png

Left-facing shore tile glitch (in-game trade shore encounter trick, Old man trick, Trade link up shore encounter trick, Fight Safari Zone Pokémon trick) | Viridian Forest no encounter grass tiles glitch


Glitchtile.png Glitch City Glitchtile.png

Safari Zone exit glitch | RAM manipulation | Out of bounds Glitch City (Generation II) | Slowpoke Well out of bounds corruption (French Gold/Silver/Crystal)


RBYPC.png Large storage box byte shift glitch RBYPC.png

Storage box remaining HP glitch | Generation I max stat trick


Pikachu.png Pikachu off-screen glitch Pikachu.png

Trainer corruption glitch


Tereka.png SRAM glitches Tereka.png

Generation I save corruption | 255 Pokémon glitch | Expanded party encounter table manipulation (Generation I) | Send party Pokémon to a new game (Generation I) | Generation II save corruption | Mailbox glitches | Mystery Gift item corruption | Trainer House glitches


Ditto.png Trainer escape glitch Ditto.png

Death-warp | Ditto trick | Experience underflow glitch | Mew trick | Text box ID matching | Meta-map script activation


Brock.png Walk through walls Brock.png

Ledge method | Museum guy method | Rival's effect | Select glitch method (International Select glitch method), Brock Through Walls


Surf.png Surf down glitch Surf.png

Grass/rock Surfing glitch (Spanish/Italian only) (adaptions: Submerge glitch (international)) | 8 8 (0x7C) grass/rock surfing glitch (English Red/Blue))

(view, talk, edit)

Instant LOL glitch and instant CoolTrainer♀-type move corruption are glitch techniques for Pokémon Red, Blue, and Yellow, based on "-" move corruption and LOL glitch.

Through the creation of an instant Glitch City it is possible to create a suitable Glitch City for "-" move corruption or LOL glitch in order to obtain specific Pokémon and/or glitch Pokémon, and this can be achieved simply by modifying items in the expanded items pack.

Instant Glitch City

By modifying the quantity of item 33 and the identifier of item 34 (address D35F-D360 in Red/Blue or D35E-D35F in Yellow) in the expanded items pack, the player can create a Glitch City that is seen from the start menu after the Trainer card is viewed but not when the start menu is closed.

Regardless, they can still be used for buffer overflow techniques, such as specific "-" move corruption, LOL glitch or Super Glitch corruptions and notably oobLG in a map with a PC.

The y-block address (Red/Blue D363; item 35 quantity) and x-block address (Red/Blue D364; item 36) as well as the map's width (D369; item 38's quantity), as well as the original map number (D35E; item 33's quantity) if the player is getting the Glitch City from banked ROM (0x4000-0x7FFF) will also control how the Glitch City appears on the map.

Although usually these are not displayed when the start menu is closed, the map can be applied when the start menu is closed through the use of the 9F glitch item in Yellow or a custom map script/arbitrary code execution in Red and Blue. One way to do it in Red and Blue is to place an X Attack x18 into item 41.

Log files

The Pokémon speedrunning community created instant LOL glitch/CoolTrainer logs for obtaining most Pokémon and glitch Pokémon with specifics relating to the map data needed. These may be found here in the instaCT logs.zip folder.

Notably the following Pokémon and glitch Pokémon in Red and Blue cannot be obtained with instant LOL glitch/CoolTrainer or RAM LOL glitch/CoolTrainer alone (at least for ROM locations but possibly from anywhere), which may be due to the lack of an appropriate map block containing the index number of the Pokémon at the right place.

  • Omanyte
  • Dugtrio
  • Caterpie
  • Kingler
  • Haunter
  • MissingNo. (hex:A2 only)
  • Charmeleon
  • Oddish
  • ▼ W G d (hex:CE)