The player is called to Professor Elm's lab to run an errand. The game was available on the Nintendo 3DS Virtual Console between Januand the discontinuation of the 3DS Nintendo eShop on March 27, 2023. The Japanese version had far more new features, all related to a mobile phone-related linking technology usable through the Mobile System GB when connecting a Mobile Game Boy Adapter to a Game Boy Color or Game Boy Advance (original or SP). It takes place in the region of Johto like Gold and Silver, with access to Kanto granted later in the game, with the player's starting town being New Bark Town. It featured various fixes and some new additions, most notably the introduction of the option to play as a girl. It was released in Japan on December 14, 2000, in North America on July 29, 2001, and in Europe on November 2, 2001. It was released as a solitary version to Pokémon Gold and Silver, which were released one year before.

Pokémon Crystal Version (Japanese: ポケットモンスター　クリスタルバージョン Pocket Monsters: Crystal Version) is the third and final Generation II core series game for Game Boy Color.

Pokémon Brilliant Diamond and Shining Pearl.