You can train some unique Pokémon by teaching them moves using TMs in Pokémon Crystal that can't be taught by TMs in modern titles.
NintendObserver’s select content on Pokémon Crystal for Virtual Console.
Pokémon Crystal and the New Nintendo 2DS XL Pikachu Edition on the same day.
Eusine!!!! There he is!!!! 😃
This goes for Europe and North America.
Discover the mystery of Johto again on 3DS Virtual Console.
Return of Eusine.
With the addition of Pokémon Crystal to Pokémon Bank, it is now possible for players to bring Pokémon from all 29 core games in the series to Pokémon Ultra Sun and Pokémon Ultra Moon.