List of locations by index number (Generation III)
Each location in the Generation III games is associated with an index number used internally by the game. These location indices are enumerated, in order, in the table below.
Met location
When a Pokémon is caught in a Generation III game, it stores the location index as its met location in its data structure. This data is used to display where a Pokémon was caught on the Summary screen.
When a Pokémon is migrated from Generation III to Generation IV via the Pal Park, its met location index in the new Generation IV data structure is set to 0x37 ("Pal Park" in the Generation IV location index table). However, this value is ignored, and instead the Pokémon's met location is displayed based on its game of origin: "Hoenn" for Pokémon Ruby, Sapphire, and Emerald; "Kanto" for Pokémon FireRed and LeafGreen; and "Distant land" for Pokémon Colosseum and XD.
Unrecognised locations
Pokémon Ruby and Sapphire only recognize the white and cyan indices, Pokémon FireRed and LeafGreen only recognize the white and light green ones, and Pokémon Emerald recognizes all of the listed indices (white, cyan, light green, and dark green).
Note that locations shared between Pokémon Emerald and Pokémon FireRed and LeafGreen (such as Navel Rock and Altering Cave) have two separate index numbers, one for each region. Locations such as the Safari Zone and Victory Road also have two separate index numbers.
Outsider Pokémon whose met location is not recognised, including Pokémon met in Colosseum or XD, display "obtained in a trade"RSE or "Met in a trade"FRLG. A Pokémon is considered an outsider Pokémon if any of its Original Trainer's Trainer ID, Secret ID, or Original Trainer name do not match the player's.
List
The rows in the table are color-coded as follows:
- Indices in cyan (i.e.
0x00-0x57) appear in Ruby, Sapphire and Emerald and are recognized by all three games. - Indices in light green (i.e.
0x58-0xC4) appear in FireRed and LeafGreen and are recognized by FireRed, LeafGreen, and Emerald. - Indices in dark green (i.e.
0xC4-0xD4) only appear in and are recognized by Emerald. - Indices in white (i.e.
0xFD-0xFF) appear in and are recognized by all games.
The special location indices in white are:
0xFD: Used by gift eggs while they are still eggs. Like all Eggs in Generation III, their met location is overwritten with where they hatched.0xFE: Used by Pokémon obtained in in-game trades.0xFF: Used by Pokémon obtained in event distributions. (Distinct from the fateful encounter flag that is set on Pokémon received from event distributions, and certain special Pokémon obtained in-game.)
The ID 0xC4 "CELADON DEPT." is internally used in Pokémon FireRed and LeafGreen for the Pokémon Center 2F rooms (the actual Celadon Department Store uses location ID 0x5E "CELADON CITY"). In Pokémon Emerald, this ID is instead labeled "SPECIAL AREA". Pokémon Ruby, Sapphire, and Emerald internally use ID 0x57 "FERRY" for the Pokémon Center 2F rooms.
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This article is part of both Project Locations and Project Games, Bulbapedia projects that, together, aim to write comprehensive articles on the Pokémon Locations and Games, respectively. | 
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