Haunted House
Error prevention and placeholders in the Pokémon games:
?????????? | ????? | ! | Abnormal Pokémon | Bad Egg | Enigma Berry (Generation III) | Error! | Error codes (Generations I and II) | Error traps for damaged save data | Error traps to prevent impossible progress | Event data debugging messages | Instant victory effect (Generation II) | Mystery Zone | N/A | Pokégear instruction booklet trap | Rhydon trap | Special (location) | This Game Pak is designed only for use on the Game Boy Color. | This Pokémon cannot be traded.
?????????? | ????? | ! | Abnormal Pokémon | Bad Egg | Enigma Berry (Generation III) | Error! | Error codes (Generations I and II) | Error traps for damaged save data | Error traps to prevent impossible progress | Event data debugging messages | Instant victory effect (Generation II) | Mystery Zone | N/A | Pokégear instruction booklet trap | Rhydon trap | Special (location) | This Game Pak is designed only for use on the Game Boy Color. | This Pokémon cannot be traded.
Unused maps and placeholder map names within the Pokémon games
Alternative map locations (Generation I) | Alternative Route 104 map | Battle Park (Platinum) | Generation II Safari Zone | Haunted House | Jubilife Condominiums floors 3 and 4 | Map 0x0B (Generation I) | Map 0x6F (Generation I) | Mystery Zone | Record Corner (FireRed/LeafGreen) | R/S Flower Shop (Festa 2002 demo) | Special (location) | Special Area | Sevii Islands 8 and 9 | Unused Olivine City house | Unused Sunyshore City house | Unused Celadon City house
"N/A" has been found in a text dump of Pokémon Crystal, within a list of locations. It is seen between 'Ice Path' and 'Pallet Town', so it may be a separator for Kanto and Johto locations.