Broken hidden items

In Pokémon Red and Green, there are six hidden items that do not function correctly. These hidden items are believed to have been fixed in Japanese Pokémon Blue and later versions (including the localized versions of the Generation I games).

Picking up one of these six specific hidden items causes the other five hidden items to disappear. If the player hands over a Fossil to the scientist in Cinnabar Island's Pokémon Lab (even if they choose not to revive it), all six hidden items reappear.

The broken hidden items cannot be detected by the Itemfinder. Instead, five of these six items have another set of coordinates that the Itemfinder believes them to be located at instead, although there is no item hidden at that position.

Broken hidden items

These are the hidden items for which this glitch applies.

The actual coordinates and position are where the player can find the item. The specified coordinates and position are where the Itemfinder believes the item to be.

Item Location Actual coordinates Actual position Specified coordinates Specified position Nugget Rocket Hideout B3F (27, 17) One tile right of TM10 (22, 23) On the eastern machine in the south Calcium Route 13 (16, 13) Fence-post to the right of a Trainer Tips sign (48, 8⁠) Southeast corner of the area behind a cuttable tree Rare Candy Pokémon Mansion B1F (1, 9) Northwest corner of the western room with lots of plants N/A N/A Nugget Copycat's house 2F (Saffron City) (0, 6) On the Copycat's bed (0, 1) On the Copycat's PC Rare Candy Cerulean Cave 1F (14, 11) On a rock in the center of the map, accessible from 2F (15, 11) One tile to the right Ultra Ball Cerulean Cave B1F (27, 3) On a rock in the northeast (29, 22) Outside the map

Background

Pokémon Red, Green, Blue have two coordinate pairs for hidden items in the game data, in the "hidden object" (holds coordinates, text ID, object routine) and "hidden item" (holds maps and item coordinates) databases.

In the hidden object database, all hidden items use the same object routine for hidden items, which determines an item's "picked up" flag depending on how far it appears in the hidden item database.

These six hidden items do not have matching coordinates (one of which is completely missing coordinates in the hidden items database), meaning that "item picked up" flag 255 is used. Hidden item flags start from bit 0 of $D66F, hence flag 255 is bit 7 of $D68E ($D66F+($FF/8)).

$D68E is an out-of-bounds address that is updated whenever the player hands over a Fossil (not necessarily giving it away, but giving it away will work as well) with the identifier of the Fossil, $1F (Old Amber), $2A (Helix Fossil), or $2B (Dome Fossil). None of these items have bit 7 set, meaning that passing over a Fossil will bring back all six items.

Videos

By ChickasaurusGL

This video is not available on Bulbapedia; instead, you can watch the video on YouTube here.

Glitches in the Pokémon games Multiple generations Transform glitches • Glitch Trainers • Cloning glitches • Error messages • Arbitrary code execution Generation I Glitches • Battle glitches • Overworld glitches -- • 0 ERROR • Broken hidden items • Cable Club escape glitch • Dual-type damage misinformation Experience underflow glitch • Fight Safari Zone Pokémon trick • Glitch City • Item duplication glitch • Item underflow Mew glitch • Old man glitch • Pewter Gym skip glitch • Pokémon merge glitch • Rhydon glitch • Rival twins glitch Select glitches (dokokashira door glitch, second type glitch) • Super Glitch Time Capsule exploit • Walking through walls • ZZAZZ glitch Generation II Glitches • Battle glitches Bug-Catching Contest glitch • Celebi Egg glitch • Coin Case glitches • Experience underflow glitch Glitch dimension • Glitch Egg • Teru-sama • Time Capsule exploit • Trainer House glitches • GS Ball mail glitch Generation III Glitches • Battle glitches Berry glitch • Dive glitch • Pomeg glitch • Glitzer Popping Generation IV Glitches • Battle glitches • Overworld glitches Acid rain • GTS glitches • Pomeg glitch • Rage glitch Surf glitch • Tweaking • Pal Park Retire glitch Generation V Glitches • Battle glitches • Overworld glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Frozen Zoroark glitch • Sky Drop glitch Generation VI Glitches • Battle glitches • Overworld glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Lumiose City save glitch • Symbiosis Eject Button glitch • Toxic sure-hit glitch Generation VII Glitches • Battle glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Toxic sure-hit glitch • Rollout storage glitch Generation VIII Glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Toxic sure-hit glitch • Rollout storage glitch • Party item offset glitch Generation IX Glitches Glitch effects Game freeze • Glitch battle • Glitch song Gen I only: Glitch screen • TMTRAINER effect • Inverted sprites Gen II only: Glitch dimension Lists Glitches (GO • Mystery Dungeon • TCG GB • Spin-off) Glitch Pokémon (Gen I • Gen II • Gen III • Gen IV • Gen V • Gen VI • Gen VII • Gen VIII) Glitch moves (Gen I) • Glitch types (Gen I • Gen II)

This article is part of Project GlitchDex, a Bulbapedia project that aims to write comprehensive articles on glitches in the Pokémon games.