Celadon looping map trick

Miscellaneous glitches of Pokémon Red and Blue and Pokémon Yellow

Amazing Man (Red and Blue only) | Cable Club escape glitch | Celadon looping map trick | Champion Blue music muting glitch | Coastal Flooding | Confusion and Substitute glitch | Cooltrainer move | Cycling based glitch maps | Escape sprite handling glitch | Evolve without an evolutionary stone (Red and Blue only) | Evolving Raichu (Red and Blue only) | Expanded item pack | Expanded Pokédex | Focus Energy glitch | Get stuck in a wall | Ghost Bicycle glitch | Glitch encounter system | Glitch City RAM Manipulation | Infinite Blaine Door | Introduction Nidorino glitch (Red and Blue only) | Invisible PCs (Red and Blue only) | Invisible tree glitch | Item stack duplication glitch | Mute the music in the Pokémon League | Partial trapping move link battle glitch | Pokémon Tower Pokédex glitch | PP underflow glitches | Recovery move glitch | Rival's effect | See a Ghost without a Silph Scope | Selfdestruct and Substitute glitch | Silph Co. PC Glitch | Slot machine glitch | Stand on a tree | Statue behavior glitch (Red and Blue only) | Super effective move AI flaw (Red and Blue only) | Super Glitch | Surf down glitch | Swift miss glitch | Transform assumption glitch | Transform Empty Move Glitch | Trick Zone | Vending machine purchase glitch | Walk around with only fainted Pokémon (Red and Blue only) | Walking lag glitch | Walk on water through Surf | Walking Pikachu happiness glitch (Yellow only) | Wild appeared! | ZZAZZ Glitch

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The Celadon looping map glitch is a method of obtaining any glitch item in Pokémon Red, Blue, and Yellow (with the exception of CANCEL/TM55 (0xFF)). It was documented by TheZZAZZGlitch.

Preparation

To perform this glitch, one needs :

• To master the expanded item pack glitch.
• Have at least (one is best) one X Special (or item with an ID greater than 31).
• Have a stack of 255 items.
• Have two other items (labelled here item #1 and #2).

Method

See also: Expanded items pack#"Dry" item underflow glitch

Obtain items with an ID≥33h

The spot where the Nugget x1 will appear as item 35.

The player should arrange their item pack in this way :

Item #1 x(qty #1)
Item #2 x(qty #2)
Item x255
X Special x1 (or item with ID ≥33h x1)
[items the player wants to keep or swap to obtain items] CANCEL

Then, the player must toss of deposit all of items #2 then #1, and continue to toss the first item until the item counter is 1 (the first item is usable, but the second item functions as a Cancel). The pack should look like this :

Item x255
Item x255
Item x255
X Special x1 (or item with ID ≥33h x1)
[items the player wants to keep or swap to obtain items] (invisible)

The player should then toss or deposit 253 of the first item stack, then swap the first item with the second(using SELECT), twice.

If done correctly, the quantity of the first item will be adjusted to x0, and the player should be able to scroll the cursor beyond the CANCEL entry.

The player should go eastmost of Celadon City and open their menu at the bottom row of tiles (at the spot pictured). The player should then open their bag, and swap the X Special x1 (or item with ID greater than or equal to hex:33) with a Nugget x1 somewhere down.

If the menu stops responding due to the name of a glitch item, tapping B multiple times should enable it again.

The player is now able to walk right and left. The Celadon City map will be able to loop multiple times until x=hex:32 or x=hex:FF. Each right step increases the item ID of the slot where the Nugget was. Each left step decreases the item ID.

When the player receives the item they wish, it should be swapped again with the Nugget x1 (or an item that the player wants to replace). If the player uses Fly or Teleport, they can safely return to a Pokémon Center without getting trapped.

To keep the item but fix the items pack, the player should deposit the obtained item in the PC, then buy / receive three items to fix the item pack.

Obtain items with an ID ≥00h

The player can stand at spots in Celadon City further to the left than the picture above to manipulate item 34 (normally the Nugget x1) to values hex:00 and hex:30, swap it to the regular item pack space and then Fly or Teleport away.

The player does not have to use Celadon City for this glitch, and it is possible to use this method to obtain any item with an ID<(map's x boundary-1).

Caution

When the menu doesn't respond due to a glitch item name, it is highly recommended that the player presses B (and not A) at a slow pace, because an accidental B press may close the menu, and a single accidental A press if a long-name glitch item is selected may cause the game to freeze with a chance of corrupting the save file.