There, they could use what was called the “Pokémon Mobile System GB” to link up to a mobile phone and receive a GS Ball — the event item that allowed them to receive a Celebi. While this ...

However, in Pokemon Crystal, gamers would need to have the rare item, the GS Ball, to trigger an in-game event that would lead to the capture of Celebi. This event to receive the GS Ball was only ...

The GS Ball was originally intended to hold a Celebi that would be a major plot point, but the idea was scrapped and Celebi was shifted to the fourth Pokemon movie instead. As a result ...