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Instant LOL glitch
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Major glitches of the Pokémon series
"Core" glitch Variants and Consequences
Arbitrary code execution see template, remote, cart-swap, unintended ROM code execution
2x2 block encounter glitches 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)
99 item stack glitch ­
Bad clone glitch ????? 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 (TM/HMs outside of the TM/HM pocket, Glitch Pokédex categories))
Berry glitch
Bug-Catching Contest data copy glitch (Japan only)
Ditto DV manipulation
Elite Four door glitch (Japan only)
Expanded party encounter table manipulation
Glitch City Safari Zone exit glitch, RAM manipulation
Glitch meta-map script activation (Generation I)
Infinite Master Balls (Colosseum)
Large storage box byte shift glitch storage box remaining HP glitch, maximum stat glitch
Item duplication glitch
Item stack duplication glitch 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
Transform held item glitch (Japan only)
Mimic glitch (Japan only)
Out of bounds Glitch City (Generation II) Slowpoke Well out of bounds corruption (French version)
Lumiose City save glitch
Pikachu off-screen glitch Trainer corruption glitch
Pokémon merge glitch
Pomeg glitch Pomeg data corruption glitch
Roaming Pokémon encounter glitch
(Mimic) Transform Rage glitch
Select glitches (Japan only) Closed menu: Dokokashira door glitch (international), Fossil conversion glitch (international), Second type glitch, Skip to Level 100 glitch, Trainer mutation glitch, walk through walls (international) Special menu: Lift glitch, Badge describer glitch)
Sketch glitch
SRAM glitch (Generation I) 255 Pokémon glitch, send party Pokémon to a new game
SRAM glitches (Generation II) Mailbox glitches, Mystery Gift item corruption, Trainer House glitches
Surf down glitch Grass/rock Surfing glitch (Spanish/Italian only) (adaptions: Submerge glitch (international), 8 8 (0x7C) grass/rock surfing glitch (English Red/Blue))
Time Capsule exploit
Trainer escape glitch Death-warp, Mew Trick, Ditto Trick, Experience underflow glitch
Buffer overflow techniques Japanese unterminated name glitch item instant encounter glitch, LOL glitch, Rival LOL glitch, Instant LOL glitch, RAM LOL glitch, oobLG, 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
Walk through walls ledge method, museum guy method, Rival's effect, Select glitch method (international), Brock Through Walls
ZZAZZ glitch party Pokémon box data shift glitch

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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 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)