The 3DS version includes technical modernizations and a previously "lost" event for international players:
For the first time in North America and Europe, the GS Ball event is legitimately accessible without external hardware. Pokemon Crystal Version 3DS (WORLD) CIA (VC-GBC)
The very first appearance of the Battle Tower, located west of Olivine City, offering a series of high-level trainer challenges. The 3DS version includes technical modernizations and a
As the "definitive" version of Generation II, Crystal introduced several firsts: This is the only legitimate way to shiny
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 on the 3DS Virtual Console (VC) is an enhanced port of the 2001 Game Boy Color classic. It introduced several features that became series staples and includes exclusive additions specifically for the 3DS release. 3DS Virtual Console Exclusive Features