Pokemon Crystal Version 3ds (world) Cia (vc-gbc) Now

The 3DS version includes technical modernizations and a previously "lost" event for international players:

Includes on-screen location signposts when entering new areas and the ability for Kurt to craft multiple Apricorns into Poké Balls at once. Pokemon Crystal Version 3DS (WORLD) CIA (VC-GBC)

Take the ball to Kurt in Azalea Town, wait 24 hours, then place it in the Ilex Forest shrine to encounter a Level 30 Celebi. This is the only legitimate way to shiny hunt Celebi through soft-resetting. The 3DS version includes technical modernizations and a

After defeating the Elite Four and the Champion, enter the Goldenrod City Pokémon Center and then attempt to leave. An NPC will give you the GS Ball. wait 24 hours

The first game where Pokémon have short animations when entering battle.