This Game Pak is designed only for use on the Game Boy Color.
?????????? | ????? | ! | 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.
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"This Game Pak is designed only for use on the Game Boy Color." (Japanese: このカートリッジは ゲームボーイカラー せんようです。 ゲームボーイカラーでしょうしてください。), as seen in Pokémon Crystal, and other messages are error trapping screens that appear in Game Boy games that are only compatible with the Game Boy Color when they are played on a regular Game Boy, Game Boy Pocket, Game Boy Light or Super Game Boy.
For a few titles such as Chee-Chai Alien, which requires the Game Boy Color's infrared port, a message like this appears when playing the game on a Game Boy Advance, Game Boy Advance SP or Game Boy Player as well.
Relevant Pokémon titles include Pokémon Crystal, and the Korean version of Pokémon Gold and Silver; these can only be played on a Game Boy Color, Game Boy Advance, Game Boy Advance SP or Game Boy Player.
The message appears after causing a Glitch Dimension in the relevant Game Boy Color game, because for the game to try to execute the game in Game Boy Color mode the register 'a' must be 11 on start up, but it no longer is after an unexpected reset. See the Glitch Dimension article for more information.
- Glitch Dimension
- A collection of equivalent error screens from various Game Boy Color games (including Pokémon Crystal in many languages)