Pokémon Raging Ruby is a romhack of Pokémon Omega Ruby that changes nearly every aspect of the game.

The new story will see you joining the Climate Research institute to investigate the shift in Hoenn’s climate that took place 2 years ago.
Wild encounters and trainer battles are completely revamped to be in-line with the new custom story and overworld.

Other key features are several new custom moves and dozens of new forms based around the four seasons and much much more.