Pokémon fan group MercuryEnigma has found a way to create custom events in Pokémon FireRed and LeafGreen. This makes it possible for anyone to create fan-made items or Pokémon and send them to the Gen 1 remakes. MercuryEnigma has published a video showcasing this experiment, and fans are eager to know more so they can replicate the process at home.
Polygon.com
Pokémon Fans Found a Way to Bring Rare Event Pokémon to FireRed and LeafGreen
Shown as published in the source's RSS feed. IndiaAIFounders doesn't link out to third-party sites — this is the complete detail available from the feed itself.